MIDI Recording help.

Creator 5. I can not for the life of me figure out how to do this or find it on the web. Trying to record from a Casio CTK5000 to cakewalk. First off, I am trying to transfer through a USB (Correct way?). Well, I can not play the keyboard and record other than using the pcs microphone. When I try to change the input, I can only select from the microphone. I know the keyboard is connected because I choose it in MIDI devices. I have tryed messing with channels, and honestly tried just about all I could think of. Haha, Ive actually been trying to figure this out for a few days and it is starting to getting annoying. Does anyone have any suggestions? Sry, I am a noob at this so.... Thank you

Welcome.
Are you using a MIDI track? The mic input would show up in an audio track.
Set the input of the MIDI track to [USB Device] MIDI Omni, unless you know that the Casio is transmitting on a specific channel, in which case you select that input channel.
Set the output to the [USB Device] and select a channel and patch (instrument sound) in order to hear the sound through the Casio.
I typically don't recommend using soft synths if you're using a MIDI keyboard with it's own sounds and a stock computer sound card while recording. The latency (delay in processing the sound) will be horrible. Once a track is complete, you can mess around with the soft synths on playback.
To use soft synths in real time while recording and hear the sound without latency would require an audio interface that's designed for low latency.

Probably not. Is it the factory card or a gamer upgrade? If so.... NO!

To do recording right you need a music specific card. Beagle has a bunch on his web site to guide the decision making....or ask what we're using. 

Awesome website beagle. Thanks for the link

first, you're welcome and thanks about the website!

2nd - if you're playing thru the keyboard then you're playing a MIDI track, not audio, so the soundcard is not going to show up as an option for output for a MIDI track because MIDI has to have a synth to be played.  the soundcard is not a synth.  but in order to get sound out of the computer speakers when playing MIDI, you need to use a softsynth instead of the casio hardware synth.

MC5 comes with some pretty decent softsynths.  the soundcenter is quite good.  but I suggest you start learning on TTS-1 since it's a GM softsynth and that makes it easy to learn.  open the help files in MC5 and click on the GETTING STARTED and there are tutorials there to work thru.  Tutorials 4 & 5 specifically teach you how to use softsynths.

also, guitarhacker's website has "laymans terms" on how to use softsynhts. 

once you've learned how to use TTS-1, start trying to use the soundcenter because it's much better sounds in it.

also, for drums you can use SI Drums.  tha'ts another softsynth that comes with MC5 and they're pretty decent for drums.

come back and ask questions if you have problems.