If you're interested in getting into sequencing and have been intimmodated by the big boys (Sonar, cubase, etc) then you might consider the Freeware "Anvil Studio" for Windows.

http://www.anvilstudio.com/

I personally haven't tried it but it looks simple enough and and has the features necessary to get you going. There are a number of add-ons (not free) that enhance the base package.

Rodney