How do I create a batch file timer to execute / call another batch throughout the day

How do I create a batch file timer to execute / call another batch through out the day Maybe on given times to run but not to run on weekends ? Must run on system times can also be .cmd to run on xp server 2003

For the timer part of your script i highly reccomend using:

echo.
echo Waiting For One Hour... 
TIMEOUT /T 3600 /NOBREAK
echo.
echo (Put some Other Processes Here)
echo.
pause >nul

This script waits for 1 hour (3600 seconds) and then continues on with the script and the user cannot press any buttons to bypass the timer (besides CTRL+C).

You can use

Timeout /t 3600 /nobreak >nul

If you don't want to see a countdown on the screen.

I would use the scheduler (control panel) rather than a cmd line or other application.

Control Panel -> Scheduled tasks