System resources

There are lots of programs that do this. A small number are listed at http://www.webmasterfree.com.
On listed under System Utilites is Tweakram is says;
TweakRAM is a handy memory optimizer tool that will keep your computer running faster and efficiently. It increases your system performance by making more memory available for your applications and the operating system.
TweakRAM defragments your computers memory, increasing the efficiency of your CPU and Motherboard caches, recovers memory leaks from poorly behaved applications, flushes unused libraries temporarily out to disk and so on. By all this optimization tricks your favorite applications and games will run faster and efficiently even on old computers.

Using this RAM optimizer utility your computer will achieve superior performance. There is no need to buy additional expensive memory for your computer. TweakRAM will defragment system memory for faster access time. TweakRAM doesnt modify your system in any way and yoursystem will be even more stable with TweakRAM installed.
I hope that helps, also under System Utilities, Connection Tweaking is Tweak O Matic.
This site is free to join and includes Freeware and Shareware.
Kim at http://www.KimsKomputerKorner.com