rim bolt pattern and offset

i just got my Isuzu and i love it... hopefully this site will get me lots of info for this...first upgrade is the rims...what are the rim specs of a 00 Rodeo(16") i am thinking about getting some 20"s or 22"s for my Rodeo... i just need the bolt pattern size and offset...thanx

The bolt pattern is 6 x 5.5 inches. I don't know what the offset is, I would call Isuzu or a dealer for that.