
i thought of something....
that cord of yours.... are you using a Stereo input in your MIC input?
get yourself a Mono 1/4 inch converter Input and use your mic input....
or.... try pulling the cord from the computer a bit, you know...slightly pull on it, don't declip it, the connection might be enough to make the guitar sound... it's because you said that your mic worked, that kinda got me thinking it might be the stereo converter that your are using from Patch cord to line in...
Guitar patch = 1 black line
your 1/4 inch converrter might be 2 black line
Lamens term.
Use this
http://img3.musiciansfriend.com/dbase/p ... 369734.jpg(although some of these might not work because they are stereo to mono and plugging a guitar patch is mono)
Not this
http://www.electronicsnmore.com/images/caa18.gif(although some of these work because they are Mono to stereo converter and work in your Line In)
Edit:
I like this one, i think this one would be great for 2 guitars on Left and right channel
http://cachepe.samedaymusic.com/media/q ... acaec2.jpgKeep in mind this would be plugged in to your Line In since MIC is Mono
this one is nice too
http://cachepe.zzounds.com/media/qualit ... 6fea57.jpg