Comment More suggestions (Score 1) 550
A HD, with BSD, DOS 6.0 and various windows OSes on it, with partition magic and as many utils as you can fit, as well as a dozen floppies. If it is passable computer, you can hook this up as the main drive, select the appropriate OS and you are good to go. If it is older, put it in as the main drive, use the floppies to create boot discs and the utils you need for the appropriate OS and you are good to go again.