Copy El_Alamein.rfa and rename it to El_Alamein_004.rfa.
You might be able to use battlecraft to change the vehicles, otherwise open it with
There's a WinRFA picture tutorial
Delete everything out the file apart from -
bf1942\levels\El_Alamein\Conquest\ObjectSpawntemplates.con and
bf1942\levels\El_Alamein\Conquest\ObjectSpawns.con (change conquest for ctf/tdm/whatever gamemode)
Open objectspawntemplates.con and change any vehicle you don't want for a vehicle you do want, see the WinRFA picture tutorial above.
Then open objectspawns.con and either replace or reposition the existing vehicle spawns.
For positions see
http://serversidemodding.com/ssm/modules.php? ... highlight= or use battlecraft.
Disabling parachutes doesn't work very well, this is the best we got:
http://serversidemodding.com/ssm/modules.php? ... hutes.html (replace USsoldier/iraqsoldier for BritishSoldier/GermanDesertSoldier)