Macintoshes...

This is roundabout. I work at an ISP. I have to figure out how to work a Macintosh, so as to explain to customers how to set theirs up. This sounds reasonable - so the salesguy produces a Mac SE. Unfortunately, it has no mouse or keyboard. SO I go about looking around. Can't afford $90 for a mouse and keyboard that the only-Mac-shop-in-town has, so I go looking for used stuff. I turn up a Macintosh 512K (Sadly abused. The people KEPT IT IN THE GARAGE SO TI WOULDN'T GIVE THEIR VCR A COMPUTER VIRUS.) Unfortunately, it is also missing the keyboard and mouse. So, how easy is it to crock up a keyboard and mouse for either machine? Can I modify IBM gear to fit the bill? As for the virus bit, that is 100% true! Their frind told them it could spread thru the power lines. :) More information on either box would be appreciated... -------