If you really want to make quality stuff on you're computer you can best start the hard way ! My advice is to try a program called reason from http://www.propellerheads.se/ . When you first start this program you won't get it at all ! It's like all stuff you will ever need in one program the problem is you wil also have to know what all effects and devices do and how you must connect them. If you never made music you can best start the hard way it will make you the best eventually !