Kalle Rantaaho
 
Isn't your Line 6 an audio interface? AFAIK it is. If so, you should not use the Realtek for anything. Sonar and MC act in a similar way regarding recording. When you record, the MC track fader has nothing to do with recording level. The level is set by your audio interface (Line 6) the moment the analog signal turns into digital. Onboard soundcards don't usually support ASIO, but ASIO4ALL usually works. ASIO4ALL is not an ASIO driver.
When Guitar POrt was published they advertised "ASIO support in progress" so I don't know if it has it today.
If there are dedicated ASIO drivers for it, use only them, but it's OK to try WDM or whatever, of course.
 
Don't let your frustration take over. We are communicating.
 

Ya, I was not understanding the ASIO concept in the tutorial.  While the Guitar Port does act as a type of ASIO it also has a line output that goes directly into the input on the sound card.  I've never had any trouble using the sound card with it because the Guitar Port is designed to do just that.

Anyway, I found that I can go straight to using the Guitar Port and as long as I seriously crank the drive on the Gear Box software that comes with it I can get a decent signal (but still not as great).

Here's a link to my first recording using the Creator.  As you will see, the output was rather low.  I found if I tried to record it at any higher volume it spiked the meters and distorted.

I'm still learning.

https://www.youtube.com/watch?v=daPSJcQM15k

gcolbert
OK Onewitnessus,
 
Kallee and the other folks are giving you some real good advice here. 
You really don't want to use your realtec soundcard for recording music.  I got things to work relatively well with one and ASIO4ALL and a year of learning how to get all of the external components happy with it.  I will tell you that it was a waste of time and getting a proper interface is important to making this easy.  It even sounds like you may have one in your Line 6 interface.  Wasn't the Guitar Port made in 2002 or so?  The line 6 drivers may not be available for a more modern OS.
 
Your input levels are set by your external sound card (line 6 doodah).  If you aren't getting proper recording levels out of it you aren't going to get proper recording levels in MC7.  Find the output level on it (don't forget to look at Windows sound device settings to see if they are turned down there as well.  There are audio standards involved in interfacing components and MC 7 expects that the audio you supply will match these standards. 
 
With an audio track armed to record, adjust the output levels of your audio interface (Line 6 thingie) until your loudest playing stays just below the red levels of the MC7 meter.  You set this level on your interface - not in MC7.  It is like complaining that your amp isn't loud enough when you have the volume pot on the guitar turned down below 1. 
 
It sounds like your line 6 thingie also accepts audio output from the computer/MC7.  It is a real good bet that it is better for recording than the internal sound device on your computer.  At the very least, it isn't going to get held up by CPU interrupts like the internal card.  USE IT.  Connect the output from the Line 6 to your mixer/audio amplifier/speakers. 

I have the 64 bit windows 7 drivers for my Line 6 installed. 
You're right, I was getting good advice, I just wasn't understanding the advice.  I never had to hold Cakewalk by the hand and make all these driver changes, the Guitar Tracks by Cakewalk pretty much set itself up automatically, reading my system and it's capabilities and configuring itself for optimal recording.

You're right, apparently the faders in the tracks serve no purpose whatsoever.  They had no effect on the recording volume on the input side, and when I went to play it back they had no effect on the play back volume either.  I simply couldn't control a mix when exporting.

I was horribly disappointed because I'm a "mix" recording guy.  I fix everything in the mix.

Perhaps I'm still missing something.

The faders still control levels routed to the Master which is then the final setting for exporting...at least it works with my setup.   That is ....those Faders are doing plenty for me during all aspects of my record/mix/export experience.    On a side note ..when I first began using my Lexicon as my interface....i was getting terrible distortion on the input side....like it would slowly overload from the direct guitar (or amp line out) to the Lex input and then shutoff completely.  I thought the Lex was defective....it did this awhile...i would lower the Sig in till it stopped and was usable for recording.  Then it kinda disappeared and no trouble since...no matter how much hot signal i throw at it...lol.  Really weird but glad i didn't have to return it.  That said....there is no doubt the new class of external interfaces are far superior to typical sound cards in Laptops. 

Onewitnessus
You're right, apparently the faders in the tracks serve no purpose whatsoever.  They had no effect on the recording volume on the input side, and when I went to play it back they had no effect on the play back volume either.  I simply couldn't control a mix when exporting.

I was horribly disappointed because I'm a "mix" recording guy.  I fix everything in the mix.

Perhaps I'm still missing something.

The faders control all output of the track during playback an mixing, so, there's surely something wrong with your settings. Actually, I can't imagine a situation when they have no effect on playback volume (other than trying to adjust soft sybnth volume using the MIDI track fader instead of that of the audio output track). I've never experienced or heard of such an issue. Maybe someone else has a better imagination. 

Kalle Rantaaho

Onewitnessus
You're right, apparently the faders in the tracks serve no purpose whatsoever.  They had no effect on the recording volume on the input side, and when I went to play it back they had no effect on the play back volume either.  I simply couldn't control a mix when exporting.

I was horribly disappointed because I'm a "mix" recording guy.  I fix everything in the mix.

Perhaps I'm still missing something.

The faders control all output of the track during playback an mixing, so, there's surely something wrong with your settings. Actually, I can't imagine a situation when they have no effect on playback volume (other than trying to adjust soft sybnth volume using the MIDI track fader instead of that of the audio output track). I've never experienced or heard of such an issue. Maybe someone else has a better imagination. 

I had to open "Take Lanes" for each track before the faders had any effect on the playback recording (export).  Before I did that the faders had no effect on playback.

My MC7 faders work with take lanes closed or open.....i dunno whats up with that....i will dig around later when i can to see if something else could be effecting your results...

I ran into your problem #1 with the MAX mod...mouse disappearing act...that's a weird quirk i never ran into before.
Did not find any other reason on faders issue yet...