Is this your first song you have recorded?
TRy putting your guitar amplifier at a lower volume, to get better sounding distortion.
Also try different mic placement, sounds a bit muddy, which mic did you use? .....a SM58 ?
assign each instrument to their frequency range, vocals,guitar bass,drums. with useing very little EQ.
But other than that it sounds great.
Go check out this band they also did something similar with reason and cubase
Leslie scarlett:
http://profile.myspace.com/index.cfm?fuseaction=user.viewprofile&friendid=364357458&MyToken=ad2ee4ca-a0ce-44fa-ad5a-9756d6580a29