Well, between VS2005 and VS2008 this little trick worked - not sure if it still works between VS2008 and VS2010 (although he didn't have time to test it himself).
(YourProject.sln) , VS . " ", VS .
, !
,
Microsoft Visual Studio Solution File, Format Version 10.00
10.00 - VS2008. 9.00 VS2005.
VS2008 - ( , !!).