That's Not a Drinking Fountain or How to Survive in a One Computer Classroom by Whit Anderson
Some of the tips were to:
Have stations set up for the students to rotate through.
Have students print off information that they may need instead of sitting at the computer reading it.
Get a projector or a large monitor for the whole class to view together.
Plan ahead, have students brainstorm what they need before they get on the computer.
Beg, Borrow and Trade, see if any other classrooms have free computers, send some students to work in the library at the computers, have the school put computers on rolling carts so they are mobile.
Match Task and Resource. If there is an old computer sitting around have students use that for doing reports. Use programs such as AlphaSmart and Dreamwriter for word processing to be uploaded later.