I am probably going to purchase a MacBook soon and I was wondering...

Since I am probably going to be purchasing a MacBook soon…

I was wondering how can I get Windows XP Software on Mac OS X?

I realize that Boot Camp comes with a Mac but it doesn’t include the Windows XP software.
So I looked up Windows XP Home Edition on Amazon and found this site:
http://www.amazon.com/Microsoft-Windows-Home-UPGRADE-SP2/dp/B0002423YK/ref=sr_1_1?ie=UTF8&s=software&qid=1210968305&sr=1–1

Do you happen to know what is included in Windows XP Home???

I was originally thinking of getting Microsoft Windows XP Software for Small Business because I have that now on my PC. But I can’t find that. HELP ME!!!