I agree with what everyone has said except about the guestbook.
I think ALMOST everysite should have a hosted form of discussion for the visitors- be it guestbook, or message board. Does your site really need one, I'm kinda on the board, kinda leaning to no maybe. But if you do keep it: Customize it to fit the rest of the site's design.
And the "Links" on the left side.
I'd at the least center align them left.
So, you can keep them centered in that visible table, but they will match each other to the left.
I hate when there's a vertical listing and it's riggid looking because it's poorly center aligned.
Also your main image, the one with: "RawCut Productions [four guys including the eyely annoying black and white guy]"
at the VERY left of the image there's little spaces of white, re-edit that image and cut that crap out of it
for the page titles...
Keep a common theme like, EVERY page says just:
"RawCut Productions"
"RawCut Productions - Bringing you a new level of Hip-Hop"
or
"RawCut Procutions - News" (Artits)
rather than:
"NewHomepage"
"AdvertisementPage" (which really needs to be cut, or included on the intro maybe under the site's main graphic, and above the - enter site -)
most the fixes are very minor, good luck.