Hi!

Have a look at Cubase SE ($100) or Cakewalk Home Studio ($90)...same price in UKP if you live in rip-off Britain...there's also some good freeware one on the 'net as well.

Check out:
http://www.sonicspot.com/aliendiskosystems/aliendiskosystems.html

http://www.sonicspot.com/rave/rave.html

http://www.digitalsoundplanet.com/SoftwareHouse/Products/Audio_Master/Freeware/freeware.phtml

http://www.5star-shareware.com/Music/MIDIPlayersandUtilities/jazz-midi.html

http://www.nonags.com/nonags/aumidiseq.html

Hope that helps!