Hi habe auch ein Problem mit PB.
Ich habe es versucht mit Arbeitsplatz-Verwalten usw. 
Meine Punkbuster "B" war tatsächlich deaktviert,als ich sie jedoch auf "automatisch" stellen wollte stand da folgendes:
"Die Datei wurde zum löschen ausgewält"
Ich kann tun und lassen was ich will,es kommt immer diese Meldung. 
Habe diesen PB Neuinstallierungs Teil gemacht ,mit Test,folgendes kam dabei raus:  
Starting PunkBuster Service Tests (v0.986) (06/30/08 21:09:44)
Checking OS
  Windows XP (build 2600, Service Pack 2) 32-bit
Checking PnkBstrA service status   RUNNING
Checking PnkBstrA Version          OK (1029)
Extracting "PnkBstrB.exe" to:
   "C:\Dokumente und Einstellungen\Leon\Anwendungsdaten\PnkBstrB.exe"
                                   OK
Checking firewall settings         OFF
Checking if PnkBstrB is running    STOPPED
Getting port for PnkBstrA          OK (44301)
Opening socket for packet send     OK
Sending version packet to PnkBstrA SENT
Receiving version from PnkBstrA    OK
Received 6 bytes from 127.0.0.1:44301
  Response = 7078 (ms) Version = v1029
Getting PnkBstrB install instance  OK
Sending start packet to PnkBstrA   SENT
Waiting for packet from PnkBstrA   OK
Received 3 bytes from 127.0.0.1:44301
  Response = 14094 (ms) PnkBstrB DID NOT start.
  Load FAILED.
  PnkBstrA.log:  Failed to delete existing PnkBstrB service 
Watching for PnkBstrB instance change (41) TIMEOUT
Getting port for PnkBstrB          OK (45301)
Sending version packet to PnkBstrB SENT
Receiving version from PnkBstrB    TIMEOUT
Checking PnkBstrK driver status    RUNNING
Stopping PnkBstrK                  UNKNOWN STATUS (3)
Deleting PnkBstrK                  OK
Checking PnkBstrK driver status    STILL FOUND (driver status 3)
Extracting new PnkBstrK to:
   "C:\Dokumente und Einstellungen\Leon\Anwendungsdaten\PnkBstrK.sys"
                                   OK
Sending load packet to PnkBstrB    SENT
Checking PnkBstrK driver status    UNKNOWN STATUS (3)
Deleting PnkBstrK                  ERROR
Checking PnkBstrK driver status    STILL FOUND (driver status 3)
Manually stopping PnkBstrB         STOPPED
Removing test PnkBstrB file        OK
  PnkBstrA.log:  Failed to delete existing PnkBstrB service 
  PnkBstrB.log:   is a component of the PunkBuster Anti-Cheat system. Visit 
http://www.evenbalance.com for more information.
[06.30.2008 20:11:42] PnkBstrB v2.077 (COD4) Service Started Successfully. This service is a component of the PunkBuster Anti-Cheat system. Visit 
http://www.evenbalance.com for more information.
[06.30.2008 20:20:13] PnkBstrB v2.077 (COD4) Service Started Successfully. This service is a component of the PunkBuster Anti-Cheat system. Visit 
http://www.evenbalance.com for more information.
[06.30.2008 20:20:55] PnkBstrB v2.077 (COD4) Service Started Successfully. This service is a component of the PunkBuster Anti-Cheat system. Visit 
http://www.evenbalance.com for more information.  
----------------------------------
  Tests finished.