If you feel like trying it, it is being republished by the guys over
www.gog.com for less than US $6.
Then head to
http://simhq.com/forum/ubbthreads.ph...ds_1_12_r.html
and download the official community mod which includes LOTS of fixes and new stuff. It is a very nice sim. I know the source code for the community mods is available as well, but don't know where it is located. Might be worth contacting the "locals" over simhq's eech forum.
cheers!