Where can i find a free guitar teaching software that shows me how to play songs off of my computer?

Im Trying.
My dad is teaching me but he barely ever has time
I just want to learn a few songs
Please help =(

dont give up. guitar takes patience and persistence to learn.
here ya go:

software:
http://www.megaupload.com/?d=4EYDXOWA
tabs for software:
http://www.megaupload.com/?d=47YK82FT

enjoy, my fellow guitar learner!

Free Guitar Learning Software - Tuxguitar

Tags: guitar, music, reference, tutorial, web2.0