How can I save my data before reinstalling vista

My hard drive went crazy (emachine) I would like to recover my data before
they change out my hard drive again. when I boot up it gives me two choices
bios setting and F10 to boot. I can not access safe mode to backup and I
dont have a bootable cd. I do have another computer with vista to make a
bootable cd if I knew what files to copy. Is there anyway I can save my data
before trying to reinstall or send it back to gateway for another hard drive
Help Please?????