You're right about the iframe. You do have quite a bit of non-store content, but it could be included in EZ pages if you wanted to make Zencart your whole site.

Failing that, you have made a good start styling Zencart to look like your main site. My suggestion would be to continue down that path, using the same colors, images, etc. in Zencart so that it appears to be just another page in your site, even though it's in its own subdirectory. I've done it many times.

There's also this:

http://www.zen-cart.com/index.php?ma...roducts_id=990

I haven't used it, don't know if it will work with the current Zencart version and understand it can be tricky to set up, though I've seen it used successfully in the past.