Playing Fallout 1 (brilliant game), but I can't seem to find the GunRunners which I need to find in order to deal with the Regulators. Apparantly it is east of Boneyard but I'm having no luck, any pointers would be appreciated.

From what I recall, you need to go to the Boneyard and head east past the deathclaws (exit sector to the east).
The next sector should be the gun runners, and they have a base that's surrounded by a moat of toxic green sludge. Theres a way across on the southern edge, you'll need to talk to a guard who's wearing combat armour.

Ahhh cheers.