There are 3 types of Windows Installation Disk.
1. An Oem or Recovery Oem Install Disk
2. A Non-Oem or Retail Version Install Disk
3. An Upgrade Disk
The Following Applies To You:
How many computers do you plan to have?
Multiple? Go For The Non-Oem Version
Just One? Go For The Oem Version
Insert the installation disk and ReBoot your computer.
Just follow the stepBystep instructions:
Delete and Create Partitions, start the Format process, and Install Windows.
http://www.youtube.com/results?search_type=&search_query=how+to+install+xp
(if you have recovery CD, the info above may not apply)
Your system most likely can't handle Windows Vista or 7
Here are some Operating Systems you can download legally:
http://www.microsoft.com/windows/windows-7/download.aspx
http://ubuntu.com
http://shipit.ubuntu.com
Use This To Burn An ISO to CD or DVD blank (not data):
http://www.softpedia.com/get/CD-DVD-Tools/Data-CD-DVD-Burning/Ashampoo-Burning-Studio-Free.shtml