I shall try to be as diplomatic as possible - which is to say not at all.
A good point is that on a 56k connection (like mine) it didn't take overly long for it to load. I was moderately upset to see that there was a Flash movie in the center there, when a normal HTML page would,in my estimation, have been more appropriate.
The buttons on the left, however, make the least amount of sense. If you're doing the stuff in the center in Flash, you'd save tons on load-time if you'd just use vector art and put 'em in the Flash file..
Having said that, the artwork in the Flash file is really poor quality. I see that they're raster images put into it, but you did a poor job of it. I think you would have more success if you just made them into vectors. it's tedious, but you'll be far more proud of the output. It'll also dramatically reduce the size of the file (which, where it's at right now, is going to top 500k if you keep with the trend).
Your font choices are abysmal. If you want people to be able to read the information about any given item, I'd use a font that is legible. That's a nice display font, but it's not good for more than one word, perhaps two.
Down at the bottom you have "MEGANITRO.02" in plaintext. It takes an awful lot away from the design. Stylize it with a font other than Times, or get rid of it completely.
The 3D feeling, the brushed metal stuff, is nice, but it doesn't strike me as appropriate for the site. I'd go with a much more clean style. Something less "fat" and more "slick." Does that make sense? It's not just a matter of making things thinner, either. It's about designing it with the audience in mind.
This looks circa 1995, and you're selling things that are trying to be circa 2020. Make sense?
Anyway, I'm done for now. Ciao.
s t e p h e n