You didn't say why you are unable to boot from the CD, so I assume it is because the BIOS does not recognize the CD ROM as a boot device.
When you turn on the computer, press the Del key, (it may be different on your system), to enter the BIOS. In the BIOS change the sequence of bootable devices to set the CD ROM as the first.
Then insert the CD, reboot and see if that works.
Mark
while zipping up rarely used file per recommendation from my laptop, I ran into the blue screen of death. It said that the files required by windows to operate properly have been replaced by unrecognized versions. No wit doesnt boot up in safe mode also!
I got the win xp re-installation cd and am tryin to boot up using that but am not able to -
1. Is the ms win xp reinstallation cd the right cd that I should be booting the system from? Is this what is being referred to as 'boot up' cd in teh forms(sorry am not that technical)
2. I remeber that there is a shortcut key to indicate to the laptop to boot from cd-rom? which key would that be in dell inspiron 1505?
I am totally stuck and dont know what to do so any advice would be appreciated.
Thanks!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic