hey earl,
For the computer. did you check the Athlon XP2000?.I think it will respond faster than a Regular P3.Unless you are planing to get a "PIII Zeon"

.
for the sound card.I Own a delta 66 and now a Audigy Platnum.I'm using them together.the Audigy is really somthing comparing to the Old "SB LIVE 5.1" that I used to have.I'm using the Audigy for outputs to my (Non Professonal) speakers(take Uncle dave's advice about the speakers) and the Delta for Inputs for my three keyboards.
hope I did some help.
------------------
Vic:)