OK im thinking of updating my RAM. PC specs: 2.79GHZ CPU 768MB (256MB + 512MB sticks) RAM RADEON 9250, 128MB, AGP - video card I was just wondering. Do i need to make sure the RAM is the same speed as the other stick i have in now, EG. 260MHZ stick in now, means i need another 260MHZ stick ??? Also i have 2 memory sticks in at the moment. But my computer says -"Windows virtual memory Low". even tho i havnt used much memory. What can i do to change or fix this? Another problem is that my computer is randomly pausing and locking up for about 10 seconds at a time... it doesnt ahppen often, prob bout every 2 hours, then continues normally. What could b causing this? Any replies would b appreatialted thanx!