Every single CD has its own serial number, not every version has the same serial...
Incorrect. The serial is merely a license generated with an algorythym. While each license key is unique, no one serial for Windows XP Home Single user will not work with another copy of Windows XP Home Single user.
The exception is, as stated, if the installation has a service pack slipstreamed.
SP1 serials do not work for non-SP images, and vice versa.
Any copy of Windows XP is capable of being
XP Pro, single user / corporate license (no activation)
XP Home,
XP OEM
What dictates that is a file in the root of the CD, the CD's title, and the serial number you enter when installing.
If you need a Windows XP serial, google
"fckgw-rhqq2" (that's all I remember.) It's a corporate license for Windows XP, no service pack.
Google how to burn a bootable windows xp cd, or go download the WindowsXP-6in1 Iso from like ehh. Betasirc.