Monthly post limitation?

[Spaz21]

I found an added here that'll let me limited the posts per hour on my forums...

but say i wanted to have a usergroup of unpaid forum members be limited to 100 posts every 30 days and a usergroup of paid people have unlimited posting.....does something exist that can do this?

or?

thanks

[RFViet]

Is there an anwser for the question above ?