Importing site or frames?

Hi

First, I'm sorry if this is the wrong place to post. It was the best I could find ;)

Now, I need to build an "Art on Demand" website. This is a system that sells reprints of art. The site can be seen at http://advancedimaging.artondemand.eu

Now, there's nothing I can do about this system, but my client wants additional pages with information, so at least a top menu with more or less static pages. He might also want a preview of shopping basket on one of these pages.

Now, this "system" is based in spain, and it's hard for me to reach them. Anyway, as I said I probably cannot do anything with this.

So is my only option to use frames? And if so, how to do this in the best (least horrible) way?

Nikolai