If you aren´t new to 2142 but you bought Northern Strike just now, do it this way:
1. Uninstall 2142
2. Delete BF2142 folder from My Documents
3. Install 2142
4. Patch to 1.40
5. Install Northern Strike
6. Patch to 1.40 again
7. Finally, install 1.50
patch v1.4
ftp://largedownloads.ea.com/pub/patches/BF2142/1.40/BF2142_Update_1.40.exe
patch v1.5
ftp://largedownloads.ea.com/pub/patches/BF2142/1.50/BF2142_Incremental_Update_1.40_-_1.50.exe
Now to PunkBuster.
It may happen that you get PB errors like "Losing packets" or simply "Punkbuster" but it´s a easy problem to solve. The easiest way is to download PBsetup from PB site (link on the end of this thread) and then this:
1. Run PBsetup
2. Add BF2142 to PB list
3. Click on "Check for updates"
4. Update process will begin and will be done in no time, after that you´re good to go.
If you are still having PB problems after this procedure, just ask here and we´ll help you out.
And i forgot, you can get PB errors in Vista for nothing and for this works right click on BF2142 icon, click on "Properties" and click on "Run as administrator". You will not get any PB errors in Vista.
http://websec.evenbalance.com/downloader/download.php?file=1
SI TU A DES QUESTION FAIT MOI SIGN