Basic online ordering functionality

We have plans to do a more fully integrated and scalable web shop interface in the future for our business (which is strictly B2B). But, in the short term, we want to allow our customers to interact with one of our vendors. Does anyone know of a quick and dirty type of solution that would allow us to show on a web site the availability from this one vendor, and allow for customers to place orders through a web site? It could be a Navisoin Attain based solution, a SQL solution, or even a hosted solution. Ideally it would be a pretty quick to implement type of solution. It does not have to look nice or have a lot of features, just very basic.