The new Apple iMac would be perfect for this since it is easily networkable and has no diskette drive. The NASA Lewis Research Center in Cleveland, Oh. is giving a Virtual Tour of their facilities over the Internet using RealMedia and RealAudio downloads. Both of these products were recommended by the IBM Repair Contractor that came to Wooddale to repair my machines. Now that I have these products I can get most of the computers with problems back on line quickly. Also, for those trying to keep their desktops and files safe, you might want to check into a product called Winlock by Boxware.
Site licenses are relatively cheap.
Going diskette less in the lab to help prevent viruses sounds like a great idea on the surface. But it requires a lot of time managing passwords and freeing up file space. The file server is Ok to use but why don't you set up a proxy mail server. Have students do their work then send it to the respective teacher. They can do their work in one class and send it on to their next classroom teacher.