The guitars are real, and not very processed at all actually. The guitar part was doubled, with two mics on the cab both times, so there are four tracks of guitar altogether. I can't remember exactly what kind of amp the dude has, but its some kind of solid-state Marshall. The only plug-ins I'm running on the guitar are some EQ, a little bit of Room Machine, and just a little something to "warm" it up a bit.
Most of this was tracked to a Tascam 688 cassette recorder. The vox and second guitar were done right to PC. There are some kick and snare samples mixed in too.