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Easiest way I can think of is to create a new group for this person, give that group the propper permissions (to administer the module), and create a custom block with the admin link in it, and set it to show for this group only.
The thing is, the main menu block only shows the admin link when you're at a module you have the admin rights for, so you don't get the 'sorry, you don't have the permissions to access this area' page too many times.
Herko