Re: simple question about upgrading RAM
the RAM should be labeled as DDR2 or DDR3 unless the sticker is gone, and as for the motherboard, if its a brand computer, it will be most likely a DDR2, unless it specifies.
Search your MOBO or Brand computer.
I think it would damage the RAM, so i wouldnt recommend trying, you could try if you dont mind sacrificing a board and ram if things go wrong.
Desktop -Cooler Master NV690/AMD Phenom II X4 965 BE/MSI 880G-E45 Motherboard/2 x 2GB DDR3 G.Skill Ripjaws X/Sapphire HD 5870 1GB GDDR5/CORSAIR CMPSU-550VX/Seagate 7200.12 500GB (OS), Samsung F3 1TB (Storage)/Sony DVD Burner/Windows 7 Professional 64-bit