...do not uninstall MSDN docs that come with Visual Studio 2005 and do not replace them with the January '06 MSDN. For some really bizarre reason, unlike the docs that come with Visual Studio 2005, January '06 MSDN does NOT integrate with it but only with the 2003 version. Huh?

In any case, the home page of the January '06 MSDN announces that the April '06 version will integrate with 2005 version but will not provide “old” information (whatever that means) and that if you want to keep using MSDN with 2003 version you should stick to the January '06 MSDN. This is really confusing.

In the meantime, I'll stick with the docs that come with Visual Studio 2005. They contain all the information that pertains to all relevant versions of Visual Studio and integrate with all of them.