Solver Add in at startup in excel 2007

[Paul]

Is it possible to add the solver add in to excel through a key in the
registry or any other. i have a lab environment where is is not added by
default and have a request to add it to the data ribbon at startup. A user
can add this manually but when they log off there profile is cleared and they
lose the settings and have to do this everytime they use the application


thanks

paul