Ask and you shall recive...
Entering the System Setup Program
Enter the system setup program as follows:
Turn on (or restart) your system.
When the blue Dell logo appears, press <Del>.
If you wait too long and the operating system begins to load into memory, let the system complete the load operation. Then shut down the system and try again.
From here...
http://docs.us.dell.com/docs/systems/dmum/syssetup.htm#entering_the_system_setup_program
Entering the System Setup Program
Enter the system setup program as follows:
Turn on (or restart) your system.
When the blue Dell logo appears, press <Del>.
If you wait too long and the operating system begins to load into memory, let the system complete the load operation. Then shut down the system and try again.
From here...
http://docs.us.dell.com/docs/systems/dmum/syssetup.htm#entering_the_system_setup_program