the ATI driver should be already install, the only thing you just need is the miner.
Most miners don't required you to install it.
So just get a bunch of 128MB Flash drives load the miner and an autorun file and connect to each computer. Then you will able to mine with all the GPU on each computer.
My dear friend... I am asking about running drivers off the computer, not mining off the computer. Very different. I already know how to mine off computers. It's about running the drivers that's causing me problems, because the computers do not have the drivers already installed in them.
Anyway, it appears that it is impossible to do so, unless someone has really done it before.