If you have multiple profiles or users setup on XP but a mach 3 is only installed in one profile will XP still load the mach 3 driver when the computer is turned on and a different profile is selected that does not have access to Mach 3?

I feel I might have issues with another CNC program driver (Liberty CNC) and it is causing noise that is making the table jiggle. 

I am wondering if it would solve the issue to install Mach in another profile and keep them separate.

Anyone?

May be wrong in what i reply but here it is.
The PC should be dedicated to Mach and the machine it is running. You will notice that the driver is loaded when Mach is opened. Should not be running anything other than Mach when machining.You can't have two installations of Mach running at the same time.  This is not a Mach problem as i see it and you should ask the other provider of the software how their driver affects other programs in a Windows.
RICH