Hi, its been a long time since ive been on these forums or played enemy territory and let me tell you its bringing back some memories.
I was just wondering if there are any decent UK servers still up and running with the old 6 classic objective maps?
Thanks in advance 
TeamMuppet runs an uk server and vote maps (original can be voted too).
http://www.gametracker.com/server_info/etpub.teammuppet.com:27960/
Make sure download is on: in main menu press ^ and type /cl_allowdownload 1
Make sure that wolfenstein has the rights to download the files and extract the dlls into the mod folder. (one way it to set admin rights to the et.exe with right click on it->properties -> komp. -> run program with admin rights
Don’t do that, it’s useless on pure servers.
What you shall do is make sure you run your game either with admin rights or your game is installed out of “program files” directory.
Best thing to do is just install etlegacy, as it doesnt keep your files in program files but rather in users folder.
It also might be that you run some bad custom version of the game.
And also there is a list of servers you can join http://et.trackbase.net/serverlist/
I did not say to do this manually but the game need to have the rights to extract the dlls else the game cannot use them. Windows UAC is preventing this on default settings (atleast I had this problem till I set full controll rights to wolfenstein folder for my acc)
Never run ET with admin privilleages, it’s asking for trouble. Safe solution for this issue is to install ET out of C:\Program Files or, as ryven says, install ET Legacy instead.