Since i did not get any helpful responses creating a thread, I'll see if I can add to this FAQ thread. I have having problems with the .66 upgrade, when i uprgrade from .65 only .65 servers are not grayed out, and even so i cannot join even the .65 servers. Also, upon trying to join a .66 server, it says i need to update.
Hmm. Make sure that you have version 1.61 of Battlefield 1942, more specifically 1.61b if you are trying to connect to a Linux (look for the little cool pinguin) server.
I do not think, however, that once you have .66 you can go back to playing .65. But do not worry about that. Any server that is still running that version is not worth playing on.
Thanks for the responses, even after checking the main pages of bf1942, i didnt find 1.61 and was therefore unaware of it. I recently installed bf1942 just for forgotten hope and never was informed of this new patch, thanks a bunch!
No problem at all, just glad I could be a help.