Thankyou all for your response,
Unfortunately I cant go higher than 8 gig but I will be using 8 gig shortly.
I am glad to hear that not using Open GL will not effect my work-flow.
Yes I do have multiprocessing disabled, in fact it wont enable any way with just 4 gig on 4 cores, I read on the After Effects help pages that each core requires 2 gig of ram before it will enable.
I will experiment when I goto 8 gig with multi processing but I do take on board the comment that it should be left off.
I am looking into whether or not I can add a card so that it frees up my system ram.
I do feel more at ease now so thanks,
Lastly I would add that after studying this problem for nearly a week and posting on lots of forums this is the best response so far!
Thanks again.
Tom.
PS: Is there a way to get AE to use more than the 2.2 gig out of 4 that it is using? I am not bale to increase it in preferences and i know my background services can run on a gig so would like to increase to 3 if possible before I go up to 8 gig in a few weeks.
Tom.