rounded modules

Hi Guys!

I know it is weird to ask something like this, because it is some sort of CSS 101 question. Frankly, I could not get it right though.

So, the case is the following:

I have a module header background set up to be repeated as the module expands.

The goal: I would like to set fix "starting" and "ending" frame. To make the whole thing look like rounded.

I know there is another option to playing around with the radius or something like that. But my designer draw gorgeous corners for it, and in other Gavick templates you guys used the same thing.

Please help me somehow!

Gabor