Create the XP bootdisk based on the version of XP that you have. Follow this link:
[link|http://www.bootdisk.com/bootdisk.htm|http://www.bootdisk.com/bootdisk.htm]
For XP Home:
[link|http://www.microsoft.com/downloads/release.asp?releaseid=33290|http://www.microsoft...p?releaseid=33290]
For XP Sp1 Home:
[link|http://www.microsoft.com/downloads/release.asp?releaseid=42818|http://www.microsoft...p?releaseid=42818]
For XP Pro:
[link|http://www.microsoft.com/downloads/release.asp?releaseid=33291|http://www.microsoft...p?releaseid=33291]
For XP Sp1 Pro:
[link|http://www.microsoft.com/downloads/release.asp?releaseid=42819|http://www.microsoft...p?releaseid=42819]
Download on another machine, make the boot disks for the version of XP you need, and then boot off of the XP floppies to access the CD-ROM.
Hope it helps.