You can make bootable cd only if you have bootable cd of winxp. First download Barts Boot Image Extractor. It will be a zip file. Extract it to C:\bbie\. Then open command prompt then type
cd C:\bbie
Insert your winxp cd then type
bbie.exe x: (where is your cd drive letter)
It will extract image as image1.bin in same folder then open nero burning rom. Select CD Boot then go to Select Boot image. Browse image1.bin and press ok. Then type number of boot sectors as 4, Delete boot message and select No Emulation. Add your content and then burn it and don't forget to select burn method as Disk At Once