most off-the-shelf computers will run biab just fine. like matt so wisely stated, the on-board sound chip will dictate the sound quality you'll get. that need not be a big concern because you can always upgrade your card. if you expect to need multiple ins/outs then this forum is the right place to discuss your options. another immediate consideration is your choice of os (operating system). besides mac vs: pc, you have a confusing plethora (a 25 loony word) options in windows alone. i'm using win 7/64-bit and i am thrilled with it, you will still find win xp systems on the shelf, but i'd go for win 7 either 32 or 64 bit.

just my dos centavos.