ET on Windows Vista

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If you wish to play Wolfenstein Enemy Territory on Windows Vista, my first advice is DISABLE VISTA UAC (What is UAC?).
[ To disable UAC, you just need to type in Run the folliwing line "C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADD
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v
EnableLUA /t REG_DWORD /d 0 /f" without "quotes" ]

-> Please remember: all of the following steps must be done with administrative privileges.
First of all, I'd like to recommend to install ET using ET Ultimate Installer (Available @ http://www.kashu.fr/etui/).

After had installed it, Download and run PB Services Installer (http://www.evenbalance.com/downloads/pbsvc/pbsvc.exe), then you have to update your PB by using PB Setup (http://www.evenbalance.com/index.php?page=pbsetup.php).
-> Be sure that your firewall/antivirus/whatever DOES NOT STOP/BLOCK PB Services (PnkBstrA and PnkBstrB)!
PB Services Installer will test whether PB Services are allowed to communicate with evenbalance servers or not. If tests fail, you will not be able to join a server with PB enabled.

There should be no need to modify or use compatibility mode at this time.
Though, you might want to use it if you experience that there is something wrong with your ET.

Also, with Windows Vista it is adviseable to choose your screen resolution through seta r_mode into your config (if you have used ET Ultimate Installer, it will ask you for your Screen resolution during install process). If you wish to edit your screen resolution, open autoexec.cfg and edit r_mode (see: http://www.tacktech.com/display.cfm?ttid=213, even if it's doom its the same game engine). Changing your resolution or your sound settings during gameplay might cause a PunkBuster kick for Windows Corrupted API Function.

Good luck :]