You won't be able to run our examples with this Version of RiaServices. You can install the WCF Ria Services for Silverlight 3
even when you don't have VS2008 installed. Just uninstall the "WCF RIA Services RC" for VS-2010 and start the installation of Ria for VS2008 it will fail and tell you that you don't match the prerequisites and will tell you that you need Microsoft Visual Web Developer 2008 Express Edition
which is free. Installing it will allow you to install Ria for VS2008. I have done this several times and worked everytime.
If you have more questions I will be glad to help.
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