Advice to those who wish to increase the memory of their computer and are not necessarily familiar with the side "material": well Verifer type (here and DDR PC-3200), frequency (400 Mhz here) or the number of pins. Please read the manual for your computer to verify these details but also the maximum memory that your motherboard can support.
I specify this because I can not count the people I know who have not bought the right RAM ... In case of conflict, your computer will not start the operating system (eg Windows) and will be long beep.