There are basically two ways of checking whether SP1 of VS 2005 is installed on a XP machine :
- Registry -> HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DevDiv\VS\Servicing\8.0 -> The value of SP shows the service pack installed.
- Visual Studio -> Help -> About Microsoft Visual Studio -> Version 8.0.50727.762. The version before SP1 will be 8.0.50727.42
~tata & take care~