Thanks Kerryh - these are very helpful links!
I'm quite excited. I ordered the kit from GHI last night and hope to get started this weekend!
It's going to be quite the learning curve. I've programmed before, but this will be my first time in a C language. I do a lot of web-work, but I haven't done anything on a Windows server in more than 10 years.
However, I'll break it down into little pieces and take it one step at a time. The goal is to have a number of devices that are controlled through the web. I'll post my progress!