Michael,
I have developed numerous custom solutions for clients using eCart as the base (see my portfolio for details on some of the sites I have worked on) and I would be interested in working with you on this.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.