Are you having problems with PunkBusters kicking you from Battlefield 1942 servers with a message about not being able to update the client? The fix is very simple, although the PB website is some what convoluted on the subject. Go to the PB download site and get pbweb. Put it in your pb directory, located in the root of your Battlefield 1942 directory and then run it.

You should be updated after that and no longer get kicked for running an older version of PunkBusters.