Hello.
Yeah you sure can. A built in app called 'renice' allows you to alter the priority of a running application.
There is also an app called 'nice' which allows you to start a program with a priority of your choice.
Check the man page for both, but in short something like...
nice -n -20 'command' will run the 'command' at the highest possible priority. -19 is the lowest priority.
You would have to be careful running something at -20 (highest) as it would be given priority over some important system PID's that are running
Good luck.
>Craig