Well, for one, I would be a lot more involved, no doubt. But I would constantly be on the forums (like I am already - except I would have a duty;)). Moreso, I would be looking for incorrect threads in the wrong forum, and move them so they can be better seen. Illegal topics - I would post a reason why, and then close the thread. Wouldn't single out people either, a person is a person and EVERYONE has bad times in a day/week.
Pretty much, I would just read the rules, try to enforce them, and just be myself (no, not that stupid side :p). Plus, I wouldn't need training! I have messed with an Admin vBulletin Control Panel (no, 100% not on this forum), so I know how easy it is to edit/close/move threads, plus edit user options.
Yes, I would want to be a moderator!