Hey Marc,
Sounds like a lot of fun and a great opportunity to learn a little .Net. Start small with a demo app that gets data from a db using a datastore and returning it back. You'll make lots of mistakes so you'll probably create several small apps as you figure it out. Once you figure out what you're doing then you can start importing NVOs and wiring them up.
You can begin by hosting with a console but quickly move on to IIS. IIS can be frustrating and there's a lot to learn. The sooner you start learning about it the better. Wcftestclient.exe is a useful tool for testing as well. I also like to create a WPF app as a client to use for testing because that allows me to control/ adjust the proxy settings and also see the results formatted.
The good news is you have the .Net framework at your disposal. Just add a reference and keep on trucking.
Bruce Armstrong has done a tremendous number of blogs, articles, videos etc using PB.Net. If you can't find what you're looking for googling just ask.
Good Luck!
Mark
