Installation

Hi there im am currently running the windows xp home operating system. my xp home disk has however been lost but before this happened i had an ISO image file of the disk on my hard drive. Now that i am wanting to format the hard drive and reinstall windows i am finding it hard as i have only got a dvd-rw. Can i burn the ISO file to a dvd-r disk and make it bootable. Also can this be done with Bios flash upgrades as i do not have a floppy drive.

thanks in advance
John varney