When doing some stuff for SKS, I had to find out how XP skinning worked. The best thing you can do is to try it yourself. So, I did and made some notes.

There are a lot of good XP skins arround, but a lot of them contain bugs, because nobody knows how to skin them. Even skins from great people like Alexandrie have some bugs in them. She cannot help that because she didn't know. The problem starts when people are using her skins as a template for their own and the bugs get copied

So, I brushed my notes up. The GP sample skin is not available. It is ugly! But there is a good sample skin called BlackAndBlue from a guy named MadIce You can get it at WinCustomize.

The notes are available at:
news.stardock.com
in the following news group:
stardock.windowblinds.binaries

BTW: We will have a version of SKS that is compatible with WindowBlinds 3.1 soon. So, if you are using that and get some errors in the Analyze function then don't be alarmed. These will be corrected in the next SKS build.