I sort of went down kicking and screaming before I finally gave up on internal sound cards. If doing simple tasks, the Scarlett 2i2 may be more than sufficient for you. The advantage of such devices is the pre-amps, but I do not know if internals exists with comparable pre-amps (so take that with a huge grain of salt). The device is not huge, and very portable (can easily unplug and put away when not "in use," or even use it on someone else's machine). Some others may have advice on comparable internals, but I personally like being able to control the interface via "knobs and switches."
 
I actually run internal (onboard) audio for Win7, and have my Saffire dedicated to SONAR usage.

Ok to begin with you should be using the Creative ASIO driver and not ASIO4ALL. In fact I would recommend uninstalling ASIO4ALL altogether as it is known to interfere with dedicated drivers. In your Sonar devices list you can see the ASIO Line In/Mic L. That's the one you should probably be using. You will only be able to select it by unselecting all ASIO4ALL options first (including outputs, I think, you should probably use the Front L/R option).

Hope this helps!

If I´ll ever going to buy a new sound card I think I will buy the Scarlett 2i2.
I will have to buy a new cord for my mic but thats not a huge cost.
I like that I can change the volume on the headphones with a real knob instead of clicking in win7.
I hope I can get it up and running without problems, but I can always ask you experts! 
 
Thanks!

My Scarlett 18i6 sits happily atop my computer completely out of the way. It very small for the amount of connections it has (half rack size and barely sticks out over the top edges of my vertical tower). The only time the desk gets messy because of it is when I start connecting things to it which would happen anyway with an internal card. The smaller Scarlett's (like the 2i2) are... well smaller I think but really if you are will to spend an extra $100 or so you get way more versatility with the 18i6 in a compact size. It also has dedicated level knobs for BOTH the headphone and Main outputs so in theory you could be saving a lot of desk space simply by not needing a monitor controller, headphone amp or mixer. Everything can be done straight through the teeny tiny box if you want. Very compact.
 
Works great, simple to use and sounds good too.
 
Cheers.

Sanderxpander
Ok to begin with you should be using the Creative ASIO driver and not ASIO4ALL. In fact I would recommend uninstalling ASIO4ALL altogether as it is known to interfere with dedicated drivers. In your Sonar devices list you can see the ASIO Line In/Mic L. That's the one you should probably be using. You will only be able to select it by unselecting all ASIO4ALL options first (including outputs, I think, you should probably use the Front L/R option).

Hope this helps!

Ok, I´ve uninstalled ASO4ALL and selected the input/output you recomended. 
But It´s still leakes. I don´t think it´s Sonars fault.
It´s the same problem in Adobe Audition.

Backstrom
If I´ll ever going to buy a new sound card I think I will buy the Scarlett 2i2.
I will have to buy a new cord for my mic but thats not a huge cost.
I like that I can change the volume on the headphones with a real knob instead of clicking in win7.
I hope I can get it up and running without problems, but I can always ask you experts! 
 
Thanks!

Are you using a USB mic? If so you would need to buy a new mic for input into the Scarlett (but USB mics suck anyway). If you are using a normal mic the Scarlett series have multi in jacks on them so unless you have a REALLY weird mic/cable you'll be able to plug into it. The only thing you MIGHT need is an 1/8" to 1/4" adapter if you are using a mic cable that has a mini jack on the end. Those cost like $2.
 
Still a good, balanced XLR mic cable is a worthwhile purchase. Less noise, better signal, etc. They can be bought for $10 or so. No biggie.

Looking at Creative's "Audio Creation Mode" panel I see you can enable "monitoring" both for playback and recording. While this shouldn't technically be an issue, you could try with both of those off, since you can monitor directly through Sonar.

By the way, you do have the latest drivers installed? A quick google showed me there may be something wrong with older drivers.

Beepster
 
Are you using a USB mic? If so you would need to buy a new mic for input into the Scarlett (but USB mics suck anyway). If you are using a normal mic the Scarlett series have multi in jacks on them so unless you have a REALLY weird mic/cable you'll be able to plug into it. The only thing you MIGHT need is an 1/8" to 1/4" adapter if you are using a mic cable that has a mini jack on the end. Those cost like $2.
 
Still a good, balanced XLR mic cable is a worthwhile purchase. Less noise, better signal, etc. They can be bought for $10 or so. No biggie.

No, I don´t have a USB mic. It´s a real one with a XLR to 6,3 millimeter plug and then an 3,5 millimeter adapter so it fits in the soundcard. :)

Also, have you checked what's under the "settings" button in that Creative control panel?

Sanderxpander
Looking at Creative's "Audio Creation Mode" panel I see you can enable "monitoring" both for playback and recording. While this shouldn't technically be an issue, you could try with both of those off, since you can monitor directly through Sonar.

By the way, you do have the latest drivers installed? A quick google showed me there may be something wrong with older drivers.

I disabled the monitoring but that did´nt help. Sorry...
 
I checked on Creatives driver page and I got the latest drivers and I tried updating the drivers with windows device manager. Its the latest.