Hey guys, i'm training for my A+ and i had a question about windows concerning the maximum amount of RAM you can use with windows xp. Microsoft says that you can use up to 4 GB of memory with Windows XP. I know that with 32-bit processors, the address bus will allow up to 4 GB of RAM but windows xp will only recognize 2 GB of RAM. If windows will only recognize 2 GB of RAM then how can Microsoft say that windows xp can use 4 GB of memory. Are they referring to Virtual Memory? All help is appreciated. Thanks!!!