Windows 98SE-Internet Explorer

[Rodtoo]

The administrator has turned off the ability to access the internet options in internet explorer and I need to change the Start Page back to its default. I can access a user account which allows me to edit the registry and I can use the pole editor. The public user account is the one affected and I can't make changes please advise how to bypass and make changes to home page. The normal home page is a public access home page dealing with necessary services and information. The default page is now a search engine "www.munky.com." The IT individual who came down has no idea how to fix it.