windows xp - How to make programs consume physical memory instead of virtual memory

I am running on XP SP3 on my 2GB RAM laptop right now and I see from the task manager that there are still around 800MB Physical Memory available. You can have a look at the appearance of the task manager here

Anyways, I see Page File Usage is quite much considering the amount of Physical Memory still available. Why Physical Memory is not used more which I hope will increase the performance.

Is there any tweak I can try to increase the performance that way?

Answer

Short Answer: No, Don't Touch It !!!

The Windows Page File is used for more than just "extra memory" when it runs out of physical memory. Please refer to this post and the accepted answer for more details than I can possibly give.

Any benefit or detriment from removing a pagefile on an 8GB RAM Machine