Upgrade 1.5 with checkout module, integrate Joomla bridge

I need to upgrade a 1.5 installation to the newest version and integrate it into a Joomla site using the 'Gallery 2 Bridge' component. The gallery is used for photo sales and the 1.5 install uses the checkout module (I believe)

Rather then spending hours figuring it out myself, is there anyone here experienced with this kind of setup willing to do it for a reasonable price?

Garth