Start with a crappy guitar, into a crappy distortion pedal, crappy EQ pedal scooped to stupidity, crappy digital delay set to some function of the tempo (probably an eighth or quarter note), a crappy digital reverb cranked to about 13, and then a crappy amp.
But why would you want to?
(And by the by, for all that I think his tone sucks - and hard - that's still a pretty accurate assessment of his setup. Buy your reverb by the tanker truck full, `cause your going to need it).
Oh, and actually, now that I think of it his stuff is probably all rack mounted and going through an effects loop.
Light
"Cowards can never be moral."
M.K. Gandhi