In a world without walls and fences - who needs Windows and Gates?! - Unknown Author
"And there's Bill Gates, the...most...famous...man in the...ah...Microsoft." -- A TV commentator for the 2000 Olympics.
Well for forums ive heard that phpBB is good but i havent used it myself. Byt creating auctions etc would take a very long time imho so maybe finding some good customisable software if you dont have the time on your hands would be the way to go.