3
Make sure you have installed the version of profile that was included in the version of xoops you are running. Any other versions can not be assured to work properly. We have a developer that releases a heavily modified version of the same module that tends to be full of bugs and he can be hard to deal with so you are best off using the version provided with the xoops you are running. (hopefully 2.5.6)
The email sends you the name of the user and you will have to go to profile and list the user from the admin menu. It is a pain but the only way I am aware to do this at this time.
To actually change the message that is send to the admin you will want to modify the code that can be found in modules\profile\register.php .
Without going through and spending the next few hours working out the details myself you should find the code you want after about line 200 in the file. You will find details for all three different activations and I believe the one you would be looking for are for option 2.
In the version included in my 2.5.5. xoops install you will look for it after this line:
261 } else if ($GLOBALS['xoopsConfigUser']['activation_type'] == 2) {
That would be the start of the activation for the admin. It goes through and sets up things for the email to send out.
Without messing with the code and trying different things I am unsure how the code works but this should give you a great head start on it.