[E]

for example.. say i wanted to put a max post per day.. id add another field... and every time u post it would add to the field as well.. when that got to max u cant post anymore... but the field gets reset to 0 evry midnight

i know there is probably a hack for this but
this isnt exactly wat i want.. its just an example

(the bit of code that says
if time = midnight update userfield set field=0 where userid!=0