Suggestions for a gift registry

[eluser]duellsy[/eluser]
Hey gang,

I'm looking into creating a gift registry site for a client which will require people to create an account on the site, and select products to add to their registry. They then tell people about the registry who can then come and purchase those products, or help pay for a portion of a product.

I'm currently looking at using GoCart (gocartdv.com) and modifying it to allow for this functionality.

Anybody got any other suggestions? Not limited to using Code Igniter, but I'd much rather stick with it if I can.

Cheers.