>>>You should search to see if anyone has done this with the ASP.Net Membership stuff
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>>I've done it with ASP.NET membership - initially with websites (fairly easy) and then with web applications (more difficult). I haven't found any good examples of others doing it. Some suggestions and snippets, but nothing close to complete.
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>>Doing it in Silverlight adds complexity by removing the simple data access, and I think the last little bit of convenience available from things like the profile class disappear (I've worked around that too but again it seems like a real pain).
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>A while ago when I was working with ASP.NET membership I found a class online allowing to generate class for Profiles. If memory serves, the class is by Peter Kelner and I used it in our app.

I have a Profile class that is actually a subclass of the ProfileBase class which works cleanly with Web applications (websites do not need the translation). I don't remember where I got it originally but it may have been fro the same post. It allows me to read and write profile information for all users.

I haven't got to that section of the Silverlight project yet, but I'm guessing that as with most other things in Silverlight it won't be that easy to work with.. :(