Process Priority Windows 95

Hi
A friend of mine makes model airplane wings and has got his big cutting machine hooked up to an ancient windows 95 laptop. Its covered in dust and all.
The problm is that sometimes there is an interupt when the wings are being cut, I figured I could fix this by allocating a higher priority to the process running the machine. Unfortunaly the Task Manaker in in 95 doesnt give me this option... Anyone got any ideas? Posibble without installing anything or minimal reg edits, Im suprised the thing is still alive as it is...

cheers