Mikhail,
Thanks for your quick reply. That article suggests the following steps; here are the results of attempting to follow those steps. Keep in mind the article is written for Visual Studio 2008 and I'm using VWD Express 2008 with SP1. This is installed on Windows XP Home SP3, and I'm running the .NET framework 3.5 SP1. (Again, everything works fine until I try to view a LINQ to SQL Class file.)
1. Verified that the web authoring component is installed.
2. Verified that the program has SP1 installed.
3. Verified that the registry contains the value: HKEY_LOCAL_MACHINE\Software\Microsoft\Office\12.0\Common\ProductVersion key. LastProduct value verified as 12.0.4518.1066.
4. Looked at the FPEDITAX.DLL file and verified it is version 12.0.6319.5000.
5. Followed link from the article back to your blog, which is where I started yesterday, I've already followed those steps.
It appears that the article refers to a web authoring component that will not work at all; I have made many pages using this version of VWD Express, it is working until I try to fool with LINQ.
Having done all this, maybe I'm just out of luck trying to use the LINQ feature of the software.