There are several shareware and even a few freeware sequencers available on the net as well. You might want to try these just to get your feet wet. A pretty good freeware sequencer is the Massiva. It's available for download on shareware music machine or directly from http://home.c2i.net/jaase/massiva.htm
I still use this occasionally and its a pretty good basic sequencer ( sure beats the heck out of the one on my PSR740 ).
I can interface the comp sequencers with my midi keyboards via my soundblaster live card and midi cables.
[This message has been edited by Bluezplayer (edited 02-04-2001).]