Well as a guest on your forums, you'll only see around 30 queries. As a registered member though, it's closer to 100. One thing you can do is add the following templates to the template cache at the beginning of the file -authority_list, forumhome_quicksearch, forumhome_dropdownbit, forumhome_quote, forumhome_newforumthreads.
You also have a query that appears to be counting the number of threads since a certain time for every forum, which is adding about 50 queries to your page -
SELECT COUNT(threadid) AS total FROM thread WHERE dateline>1057849698 and forumid=XX
Add those templates to the template cache, find that query above & remove it, and the number of queries should be a fraction of what they are now.