Does anyone know of an existing XML product catalog tool?

I need to create a web product catalog for about 200 items. I am doing this as part of subsite for a large company and long-story short, I need to make this site self contained, without relying on any assistance from their IT department (so no MYSQL, etc.).

They already have a catalog of thousands of products, but the purpose of this subsite is to highlight products to a particular market.

The catalog would need to have the ability to create a hierarchy, and basic product information (name, description, image, sku number) and an interface for easy updates. No ordering.

I was hoping to find a pre-existing solution that I could modify, but haven’t found anything. Only solutions for a very small number of products or huge content management systems.

Any one have any suggestions?