Weee, here we go:
A. Bryce 5 is not owned by Metacreations. Corel owns it. Metacreations owned Bryce 4, but they went out of business.
B. Flash as a design tool for business sites is a bad idea. A very bad idea. When you make a business website, you want maximum compatibility. Not to mention your implementation of flash is rather pointless, the same effect could be achieved with a couple div tags and CSS-P, and a gif.
C. That font is horrible. Seriously.
D. You know how to use Wings3D, Bryce, Maya, Lightwave, and 3DSMax effectively? Wow, that's more than everyone I know that has been in the 3d modelling business for years don't even have that much experience. Everyone tries to focus on one program, so they can become really good at it.
E. Did I mention the font?
F. Your page has a very bad looking black line in IE. Look above the navigation bar.
G. Home should be on the far left, not the far right. We read from left to right, and Home should be the first link.
H. How much are you going to rehash that logo?
I. I really, really, really hate the black border on the side. Either find a way to keep the site to fit the entire page on all monitors, or add a border on the right side.
J. Bryce sucks at textures outside of its own program. (And itsn't very good even in that respect, unless it is water or skies.)
K. The color scheme is bad. The blues just doesn't fit at all, especially on the left border.
L. If you say you know how to write a page hardcode, do it. Using programs can make some seriously nasty code.
M. Your <body> tag lists link and vlink as the same color. Not a good idea. Let people know what they have clicked on, change the color.
N. That border on the left of the text made entirely of colons is not only bad design for a graphic web page, but doesn't look good at all.
O. Your side border is an image built to fit an exact size page. What if the user makes the text area longer? The border just disappears, that's no good. Use some CSS and make an extending border that fits no matter the length of the document.
P. Going off my last comment, it seems like you made the text, and built the site around it. You should always keep in mind of any changes a person might want to do, such as more text, etc. Even if this design isn't necessarily going to be used, at least show people you know what you are doing.
Q. I recommend you start using XHTML. It's becoming much more of a standard nowadays.
R. Your 3d models aren't that impressive. Especially the ones in the foreground. I can't really tell what the bg ones are, but at least they look more complicated.
S. All my comments are in addition to what everyone else has said, including the W3 validator, learning CSS, problems in different resolutions (At least make it work great for 640x480, 800x600, 1024x768. Those are common resolutions.)
T. Google likes text more than flash. Keep that in mind when trying to make your site searchable. Also, Google doesn't look at meta tags, but you should still have them for other engines.
Well, I think that's it for now, I could probably go into more nit-picky stuff, but that covers the basics.