That is the correct link to get ProfitUI. There is an issue right now of getting recent fixes uploaded to the host. I am working on a solution to that, but can't say anything more right now.
I'm going to let other people answer your request for an example. I also know XML at a basic level, but not enough to help you directly. The EQ2 UI is a good example of the power of XML, but also a good example of how complex the software can get.
-= Therendil =-
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