FF home page problem

I work for a school district who provide me with a laptop which connects to their network whenever I am in the school.
I also use the computer at home. I use Firefox browser. If I set the home page on FF at home and then go to the school and connect to the network, the home page is changed to the schools default home page.
I am wondering if Spyware Blaster has the ability to lock the homepage to my preference so that the network cannot change it.
If not, are there any other apps which will do this?

 

As I follow up, I finally figured out the problem and a solution.

This is an IBM laptop which has IBM software for access connection called Think Vantage. Within the software, is an option to set your homepage and over-ride the settings in your browser. I disabled the option and now I can set the homepage in Firefox settings.