Firstly NO advertising on this forum. If you wanted to post your site you need have to post if on the events forum. So moderators please move this thread.
As for the website I think its pretty proffessional. What I would say is that there are too many menu buttons on the left for my liking you should do drop down menus or something instead of having a huge scroll of buttons.
Other than that it looks pretty good. Nice job.
P.S I signed your guestbook.