I have a Sony Vaio laptop computer. I recently got a bootable Linux CD. However, I can't boot the computer with Linux. Usually in most computers, pressing [Del] key during startup opens set up menu where one can specify the booting sequence order. However, whenever I switch on my computer only "Sony" appears on the screen and pressing [Del] key doesn't open set up menu. Simply Windows XP starts always.

Is there any way to enter in computer's setup?

Thanks for any help.