Ram Compatibility

[willcambo]

Guys I want to upgrade my Ram but i don't know much about Ram and stuff. My other Ram stciks are 1GB DDR2 PC800 Ram. I want to purchase 2x 1GB sticks but which ones shall I get to keep them all compatible?
Please help!

 

[Shadow703793]

PC 800 is NOT DDR2 RAM. Download and run CPUZ. Check under Memory.