Verry professional design I love it !
A few suggestions:
- Loose the GoogleAds in the footer (you won't get too many clicks with that placement anyway)
- Re-design the header so that it matches the "semi- Web 2.0" style you've got going there.
- Modify the mouseover images for the navbar so that they better match the style of the navbar (they lack that nice sleek shadow under the navbar, also try to go for a more 3D feeling)
- The register_rules looks all messed up. Try to come up with a better sollution for displaying both the default vB rules as well as your own
- You really need to fix your keywords if you care about SEO.