Vista how to make more “physical memory available”?

My notebook is 1G of memory, physical memory has been 50% to 88%, I would like to ask how to make vista more “physical memory available”?
Thank you, ha ~ ~!

right to open virtual memory computer – Properties – Advanced System Settings – High – Performance – Set – High – virtual memory – inside Set, set up to save, restart after came into force in the disc C plate better than
the size of physical memory in about 1.5 times, minimum and maximum fill the same, can reduce the debris of the upper floors.To other people The physical memory is …
due to the virtual memory is part of the wealth to the hard disk space to use as a memory, so to enhance their performance did not help much, because the memory is hard to read and write speed of the 20W-fold So to set virtual memory than real memory upgrade! Refers to the physical memory available for your 1G memory has been deducted from the use of the remaining part.1G memory, for example, you are at this time, your system uses a 512M memory, the physical memory available to 50%.If your memory to 2G , On the physical memory available to 75% of.So to get more physical memory, and which have no memory upgrades in addition to its law.Notebook memory is very cheap, I have just two weeks before the addition of 2G, 220.PC In response to a lot of fast, very cost-effective to spend money to buy a memory block Qi Bashi fitted