Change site to use X-Cart, integrate with QB Mac(repost)

Looking to change our shopping cart to X-Cart to allow for easy changes, provide correct calculation of shipping costs and allow for integration with Quick Books Pro for Mac. See [login to view URL] for family of sites. ## Deliverables Once this is done, we will want to be able to update X-Cart ourselves as updates come available. We don't want it to be restricted to only you changing it.