THis is from Diamond. Yes I have successfully did it. I found the way to change my pc registry to create a mic slider in Dell laptop. I have a 100 watt 5.1 pc speaker which plugs into the speaker hole and the mic hole is for my guitar, it sounds fantasticly rich and loud, I have to say, I like it better than the amp I tried out at the shop, and it's fun and free.
DiamondR4ever.