Here's my opinion on the site--actually the homepage. I rarely go past the first page when reviewing a site, until lots of suggestions and changes have been made, anyway:
Frames....like you said, lots of us dislike them, but the way you're using them is better than the way most sites seem to use them. The only thing I'd say (and you may already know this) is to make sure that each page in the frames checks to see if it was opened in a frame or in a parent window so that if it's not in a frame it can redirect to a page that will open it in one.
About the top, the way you have the image moving underneath the flame part is cool, but it seems a little weird, just because the menu part is centered and it's off to the side. But I can't really think of any way to center that.
The flash fire (in the content part) seems to me like it's way overused and isn't that great of fire in the first place, but that's only my opinion, take it or leave it.
The background fade for some of the areas where the content goes seems like it isn't quite the right shade to fit the rest of the site. Possibly change those colors to be more like the brighter ones in the menu part?
I can't read the copyright text at the bottom.
Other than that, it looks good. I especially like the way you made the menu look like the front of a car.
Rick