If you're referring to
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D : LocalizedString
value, the default data type is REG_SZ. You need to DELETE that value and then CREATE it as a REG_EXP_SZ so that environment variables are expanded.

You can push this out to all systems using a central script with admin rights, and it will automatically use the current user's name if you load it with something like "%USERNAME% on %COMPUTERNAME%".

Glenn
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Actually I am a Rocket Scientist! \:D