I'm not sure that giving awards for the number of posts is such a great idea because it might cause people to clog up the board with irrelevant posts, or attempt to answer questions without the knowledge to do so, just to gain prize draw entries.
Maybe the site could have a check box next to answers where people can click to rate posts on usefulness and you get prizes based on ratings? Or a check box for 'this post answered my question/solved my problem' and you get awards for the numbers of problems solved?
Just suggestions. Maybe they'd be too much work, I don't know
ps Marcia - the site is set up to not allow non-moderators to post in the announcements section so noone can reply to your post directly, hence this new topic in this section. I hope that's ok.