Thanks for replying.
I don't know about an user approval page, I just approve the user in the user administration.
The advantage of having an activationlink in the approval mail is that I don't need to use the system where you first need to open screens, sort by register date and find the user etc, in short far more steps to activate.
So it's possible to add a link, but what code should I add to the 'UE_REG_ADMIN_PA_MSG' override?