Mr Draper,
I know nothing about computers but have just successfully replaced my 2032 batt in my Dell Dimension because the date/time started to drift off when it had been unpowered for a while.
It was straightforward - power off, ping it out, ping the new one in - job done. All I had to do was tell it the date and time. I has written down the BIOS settings, but I hadn't played around with them so I had nothing to reenter. The only danger was 'pinging' the old one out without damaging any of the surrounding hardware or wires.
Good luck,
mcdhu