hot-add
The Functions of replacing system components without shutting down the system
pagefile.sys
Pagefile.sys
replace the memory replace the memory
hot swapping
A computer can still operate without virtual memory (virtual memory is just hard drive space that is set aside to allow the computer to swap data to and from actual RAM). It is just that on a modern multitasking system things could slow down if you have a lot of things going on and the system is reaching its memory limit. With virtual memory turned off a system with minimal memory will tend to really slow down a lot. It may not be as bad on a system with lots of memory (like 2GB or more).
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You need to edit security policies for non-administrator type users. There is the option "not allow users to power the system off" or something like that.
how to install System management server 2003 on window server 2003?
Yes, it should stop all shutting down actions by your computer if the system is overheating.
Why would you want to use Win& memory diagnostics on a WinXP system. WinXP has it's own.
In order to get a dedicated server without breaking a bank, it is best to install an SLA backed collocation service. Using multiple IP system prevents loss of internet connection for a dedicated server and prevents breaking the bank.