Can any one explain this
"My feiend is using a Windows xP O.S. & a 2x2gb=4gb RAM but on the DXDIAG it onlt shows 3gb"
Also
"I have Windows Vista 64 bit & 2 gb RAM, So is it OK if I get another 2 gb RAM, I mean It wouldnt show only 3 gb insted of 4 gb"