Many of the Vsti have built in effects already, but for those that either do not have them or have weak effects processing, add on effects processors are available for many soundcards. I have Spin Audio's ASIO fx processor for my Midiman Audiophile card, and the kx drivers for my Soundblaster Live can be used to add effects for that card.
Native Instruments makes the B4 softsytnh, which is about the best emulation of a B3 that I've ever heard.
You can find it here and try a demo if you would like:
http://www.kvr-vst.com/get/51.html AJ
[This message has been edited by Bluezplayer (edited 01-27-2004).]