Trying to record a song, have computer, LP, Line 6 GuitarPort, 100W Marshall MG, access to 2 Rockband (as in the game) USB Mics., access to a drumkit and bass, Ableton Live Lite 8 and maybe about £40 for other things I might need.

I want to record a drumbeat to go to this rock song, but I want it to sound as professional as the guitars and bassline and have no idea how to do this at all, not even tried yet. I dont know what recording with the mics would sound like, again havent tried

What is the best way to do this?

PS, best way to record vocals??