I just re-installed my copy last week. I've had it since close to when the game 1st came out, and I also had no problem installing the 1.3 patch.
Having just recently played through COD 1 and its expansion, I went to COD 2 next for comparison. While the graphics were certainly better, I'm not sure I liked their decision to eliminate health packs and go to an auto-save system. Still a fun shooter though.