I have two systems PII 400 & amd k62 300
both systems work fine using vst I have about 6 hard drives in the amd k62 system and a cd recorder.
I am able to do direct to disk and burn cd's on my ultra 33 hard drives, Now PII's are the standard but if you need to save money or put your resources some where else (sound cards etc..), by all means get a k62 makes some money then by a PII.
if you need more spec's on the amd k62 try tom's hardware page. It is a very good page full of fair and no hype information that will help you with any system.