or use mkportal, you will be able to edit the look a little, i can help with that if you want. Basically it acts as a portal to your forum, but adds extra pages, such as quotes, galleries, e.t.c. It's really cool, I used it on my site, but it isnt compatible with SMF forums. You will be okj though as it is a vBulletin forum. Alternatively for a small fee try scriptlance. Its like eBay, only web masters bid for projects, and you pay them. The lowest bidder, or whoever you pick wins. Sign-up, start a project, saying what you want, which I presume is integrating login-foms to your exsisitng site. You could type PHP tutorials on google too. Places like
www.devshed.com are quite good. Alternativley use a website content management system like mambo, joomla, php-nuke( not as good). Yopu can donwoads millions of editble templates, and millions more modules, like paypal donat , random gallery pic e.t.c