Thanks you all for valuable inputs. I really appreciate them. :-) Anyway, back to the topic, it's not that I am in a trouble setting 4GB pagefile settings on my hard drives. As many of you have predicted, I do have suffient enough space for having 4GB pagefile. My question is, since I have 4GB of physical RAM, having pagefile that is twice the size of my RAM seems to be useless. I understand that Windows do need pagefile no matter how much RAM I have. It's just how much do I need if I have fairly large 4GB of RAM. For instance, will setting pagefile sized to 256MB give me problem? Do I have to have pagefile of Microsoft recommended 1.5 times the size of my RAM for minimum, even with 4GB of RAM? Thanks. Sang