[Tigga]

Well you can stop it from adding to the number of your users post count by setting the last option in the forum options to no (Count posts made in this forum towards user post counts?).
To not show threads in that forum in the total threads for the board, open your forum/index.php file and look for:

PHP Code:

$countthreads=$DB_site->query_first('SELECT COUNT(*) AS threads FROM thread'); 


Replace that with:

PHP Code:

$countthreads=$DB_site->query_first('SELECT COUNT(*) AS threads FROM thread WHERE forumid!=XX'); 


(Obviously replace XX with your forumid)

The posts part would be a little more tricky and (unless I'm missing something) would add at least an extra query or 2 to your index page. If you still want to do it despite the extra queries let me know and I'll post instructions after I get home, assuming someone else doesn't beat me to it.