Honestly, you are better off just getting some more memory for your machine. Find out the max your motherboard can support and add more if you can. If you are using a 32 windows, you will only be able to use 3070 gb of ram (assuming you bump up your ram to 4gb). 64 bit doesn't have that limitation.
Modifing the page file won't help all that much as far as speed goes. The hard drive (where the page file resides) is much slower that RAM will be. If you are going to modify the page file, whatever size you want to set it for, make the minimum and maximum the same amount. Doing that will give the processor one less thing to worry about. Normally having different values for the min and max makes the processor work harder by resizing it on the fly. Having the same values takes that away. Microsofts rule of thumb for setting up virtual memory is 1.5 times the actual ram in the system.
Be careful with using real time in task manager. You can lock up your PC. Use caution. Setting high priority is a safer alternative. Ending processes, while freeing up some memory, is better served as a tool for freeing up CPU time. All those processes fight for CPU time and it takes away from what you are wanting done. I personally go into the Services MMC snap-in and disable (or set to manual) all the processes that I don't need for my daily use. Once windows starts up and loads everything, I have 24 process in XP that run. In my Vista, I have 34 (vista has more stuff that I haven't decipherd yet).