If it's on XP, you can go to START --> RUN and type "gpedit.msc" to pull up the group policies. Then you can set the home page to whatever you want.
If you're wanting all of his request to go to a specific page, then you need to edit his HOSTS file.
*.*.*.* (
www.iajsodiansodi.edu)
Just be careful please, as not knowing a lot about computers can certainly get you in trouble.
Computer pranks usually aren't a good idea either.