What do I have drawn?: database comparison

Our company switched to Solidworks a few years ago, and the transition has gone.. poorly. Most of the mess comes from a paper-based / 1995-autocad style of thinking, some short-cut-taking and some

Part of my job is to clean this up, and step 1 is to figure out what we have drawn and what we don't. We have a database that stores all of our parts and assemblies with prices/vendors etc (Great Plains). I can export a list of part numbers from this database into Excel. If I can do a similar process for the parts/assemblies in a specific harddrive-folder, I can use V-lookup to compare the lists. Do you know how I can get a list of solidworks assemblies into Excel? (or propose another method)