I've installed Openacs in Win2K and it is really very straightforward following instruction
here . Also there was a mention in
this thread of someone who managed to install Openacs in Win98 following the instructions mentioned above. Once you have the package installed and working on a Win machine, the I know that you should be able to image that machine on a CD and then install that image on any pc (there is a piece of software made by the guys who also make partition magic, I think is called image maker or something like this). At least this is how we customize new pc's at work to be in line with our corporate policy etc.
Good luck with your work.
Bradut