I blogged my initial thoughts on Nant and my hopes for finding some better tools beyond what I had found just before lunch. When I got back from lunch, Darrell Norton replied with an XSLTTransformer application over on C# Corner. I found the vsconvert.xsl file via Gordon Weakliem's blog and now I have a nearly working project build. Once I get this fixed, I anticipate running a nant script that creates a new build based on project settings at the beginning of each automated run. I'm not sure this is the way to go, but I'll give it a shot.
Thanks Darrell!