Are you talking about the Run... option from the start menu? Try these, but note - your system administrator has set these for a reason, changing them could have consequences. And the settings will be reapplied so you'd need to reset the registry
values again:
User Key: [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\
Explorer]
System Key: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\
Explorer]
Value Name: NoRun
Data Type: REG_DWORD
(DWORD Value)
Value Data: (0
= disabled, 1 = enabled)
You would want to change it to 0