Students unable to create forms using Acrobat Pro 8

We have installed Acrobat 8 on 30 of our machines and have run into the following problem. We are teaching creating forms, however students are unable to create or edit forms, also the Adobe PDF tool bar icon does not appear for students. If we add the students to the Administrator group on the local machine they are able to edit and create forms. We really don't want to do this for obvious reasons. This gives them access to the whole machine. Do any of you know which directories or files Adobe Acrobat needs access to? Perhaps if we gave students read/write access to these it would fix the above problem. Have any of you had problems with this.

thanks,

Leslie