Requested registry access is not allowed

After uninstalling Visual Studio 2010 BETA, one of the bugs I received in Visual Studio 2008 was
Requested Registry Access is not allowed while trying to add a class to my solution.

To fix this, download and install SubInACL which is a command line tool.  After installing this, create a .bat file and put this lines in it:

subinacl /subkeyreg HKEY_CLASSES_ROOT\VisualStudio.vbproj.9.0 /grant=administrators=f
subinacl /subkeyreg HKEY_CLASSES_ROOT\VisualStudio.vbproj.9.0 /grant=users=f
subinacl /subkeyreg HKEY_CLASSES_ROOT\VisualStudio.vbproj.9.0 /grant=system=f
subinacl /subkeyreg HKEY_CLASSES_ROOT\VisualStudio.csproj.9.0 /grant=administrators=f
subinacl /subkeyreg HKEY_CLASSES_ROOT\VisualStudio.csproj.9.0 /grant=users=f
subinacl /subkeyreg HKEY_CLASSES_ROOT\VisualStudio.csproj.9.0 /grant=system=f

Save the bat file into C:\Program Files\Windows Resource Kits\Tools or Program Files (x86) depending on your system, and run it.

problem fixed!