Heres a bit of useful data from a forum post on macs2u.com

Quote:
you just take the plastic cover off the base, and the CRT connector is sitting there right in front of you!
It has a 15 pin connector screwed in, which you remove and then connect a mac to PC VGA adapter and you are off!!


Heres the link to the discussion
http://www.macs2u.co.uk/cgi-bin/simpleforum.cgi?fid=01&topic_id=1073155044