I know how you feel. Why ya think I check this forum every day... lol. The truck is a little more practical for me though, since I like to haul my dirtbike around. Can't say I wouldn't like the better breakover and departure angles of an Xterra though.
I've got a write-up on ClubFrontier but I'll give a mini explanation. Basically I took the tire/ wheel off the truck and taped around the rim, covering the tire. Then I sanded the wheel down and cleaned it real good. Next, I sprayed about 3 or 4 light coats, followed by one smooth final coat. Last, I sprayed 2 very light coats of Duplicolor wheel "clear". If you go too heavy on the clear it will look milky. The nissan emblem snaps onto the center cap, so just take that off when you paint, and put it back on afterwards.