Programmatically access a specific process in Task Manager?

Is there some way to open up the task manager to a specific

application? I need to programmatically adjust a particular

application priority and affinity. I can do it with a script if that

application can be programmatically highlighted when task manager is

opened. The problem is trying to get that application highlighted.

My current method is to arrange by memory usage and move to the top

of the list, since the application uses a lot of memory. But it does

not always use the most memory. I could move to the top of the list

and then press the first letter (key) of that application, but

usually it does use the most memory, so that will put me on some

other application farther down the list.

Thanks.