Virtual Memory question..sort of.

[Massa9]

Is it possible to use system as a page file , but only a small amount compared to what Windows would manage automatically for all drives. 

I don't know the ins and outs of the game engines or Direct X or C++ ect., Until i do find out what i need to do to with S.T.A.L.K.E.R. and it's X-Ray engine, the only solution for crashing is a custom set page of about 3GB Min.  

Maybe there is a way , but searching with google is not the most elegant solution, Simply put it is not effective so far. Let's Say Engine uses 3GB of Memory , (if that) then it calls on the virtual memory and if it is not enough than CTD.  Changing it did help. But I want the engine to use system memory for what other games automatically would do. Is there any comprehensible way to go about this?  

[Godlygamer23]

How much RAM do you have? Physical RAM.

[LogicalDrm]

You can change pagefile to whatever you like. I wouldn't recommended using under 1/2 of your physical ram. But that won't really effect on how software are using pagefile. If its coded bad, you have to live with it.