I sampled the drums first and made a scratch track of the whole song in a few minutes... just cutting and pasting of guitar riffs... Then I recorded the 4 GR3 rhythms, then the 4 layers of the miked amp (with my amp and guitar in the control room, so I could work with Cubase all the while I was recording), Then came the bass through DI, after that I recorded the vocals (also from the control room, just put some curtains around and some foam in front of the mic). That was one day... The next day I recorded the lead guitars, made a rough mix, used a ton of compressors and shit and just popped an L2 on the stereo buss. That's that.
Oh, and for the timing... A click track!!