How to get rights on windows XP?

Question

Windows

It is required to write a utility to change the affinity mask of an already running process by its PID.
I know that for this you need to somehow get some kind of rights.
How to make it right on windows XP?

Answer 1

Run the software that changes the affinity mask as an administrator. It is possible by means of runas.
There is no UAC in WinXR, so you can't elevate privileges.