Is it really that dirty, dingy, hairy and bug ridden? Brush attachment on a vacuum cleaner wouldn't do the trick? If you're super anal about this sort of thing and want to bring back the illustrious "new" look to the board, I've had extremely good luck spraying 'em down with a cleaner such as Fantastic, Spray Power or window cleaner. Spray the hell out of it (like with a garden hose or basement wash tub), let it sit for a minute or two and then rinse the living snot out of it to where you no longer see any soapy bubbles. I then shake 'em out, wipe 'em down and use a hair dryer to finish the job. If it's nice and sunny out, might even let them sit out for a bit too. A half a day later, you should be able to power the thing up safely.
I know electronics repairmen that simply throw old boards into their dishwashers... but I wouldn't trust their heating element drying cycle to not damage 'em. I believe the method I've outlined is much safer and you should see the boards I have done. Damn things truly look like new. Sorry about the image quality. Really wish I would have kept my nicer macro lens. Some pics:
http://www.coinopdreams.com/cpu...the PeeCee and ][gs boards were F*U*N*K*Y before the wash! (notice the "fast ram" and "standard ram" monikers on the ][gs board?) :lol: