I've been using the old Cinema Display with my MBP 2.5 17" with the Apple DVI to ADC adaptor. A while back I used the monitor with my old G4 dual 1.25 to grab some old files. When I plugged it back into the MBP... Nothing! I tried it again with the G4 and it works a treat so the display and ADC converter don't seem to be the problem. The MBP is also running ok on it's own.
Cinema Display 23, Mac OS X (10.6.8), MBP 2.5 17" (2008) DVI to converter