I just found the game again (Ryan, I see your post from last year). I remember someone had the game back up and running around 2007 or 2008 at http://silencer.arsia-mons.com/
Anyway, many thanks to whoever got it rebuilt this time!
I don't really have time to play these days, but I'm glad the game is still alive! I'll try to get back in it, so feel free to email me at email@example.com
I did the tutorial in this re-vamped version and it's noticeably different. The first thing I noticed was that the ladder jump doesn't seem to work anymore (or at least I couldn't get it to work). But the other mechanics seemed the same.