How can I Transfer Rom Images From Arcade Boards? (Score 2, Interesting)

I am extremely interested in aquiring equipment to legally transfer rom images from arcade boards bought of of Ebay or other online retailers.

I cannot find any info on this on the net via google.

Can anyone help me find some information on how to buy equipment to transfer roms from the more popular board types (or even all board types) to a pc?

I'd probably make it my new hobby.