Check out these threads on the same subject. There's help in there somewhere....
http://www.nitroforumz.com/showthread.php?t=1140
http://www.nitroforumz.com/showthread.php?t=657
http://www.nitroforumz.com/showthread.php?t=1140
http://www.nitroforumz.com/showthread.php?t=657