I'm looking for a free windows xp pro or home edition. where can i get one?

Try this application. Its free and its windows 8 compatible. also the app. has gained good rating on cnet.

You can also do a clean installation by following the procedure as listed below:To perform a clean installation of Windows XP, follow these steps:Back up all important information before you perform a clean installation of Windows XP. Save the backup to an external location, such as a CD or external hard disk.Start your computer from the Windows XP CD. To do this, insert the Windows XP CD into your CD drive or DVD drive, and then restart your computer.
Note To boot from your Windows XP CD, the BIOS settings on your computer must be configured to do this.When you see the "Press any key to boot from CD" message, press any key to start the computer from the Windows XP CD.At the Welcome to Setup screen, press ENTER to start Windows XP Setup.Read the Microsoft Software License Terms, and then press F8.Follow the instructions on the screen to select and format a partition where you want to install Windows XP.Follow the instructions on the screen to complete the Windows XP Setup.

You may need to check to see which "service pack" you are currently on.

See below requirements:

System Software — Windows XP & Vista

• Windows Vista Business or Ultimate Edition
  
  • 32-bit OS Installation Only
    
• Windows XP Professional or Home Edition
  
  • With Windows XP Service Pack 2 or Service Pack 3
    
  
  
• Not Supported:
  
  • Windows Vista 64-bit (any version)
    
  • Windows XP Professional x64 Edition
    
  • Windows XP Media Center Edition
    
  • Windows 98, Me, 2000, NT, 95, 3.1, DOS
    
  
  
• Not Tested:
  
  • Windows Vista Home and Home Premium Edition
    
  • Although Windows Vista Home and Home Premium Edition have not been tested or qualified by Digidesign, there are currently no known issues with Vista Home and Home Premium 32-bit operating systems and Pro Tools M-Powered 7.4 compared to the supported Windows Vista Business or Ultimate Edition operating systems.
    

Windows Vista SP1
There are currently no known issues with Service Pack 1 for Windows Vista based on our initial limited testing and customer feedback. Although full qualification with all Digidesign products has not been completed, we do not recommend against updating to SP1, given the number of important overall system fixes in SP1. We do recommend that you backup your system and create a restore point before updating to SP1, should you encounter any problems after installing the update.

You can buy a copy of Windows XP (and I recommend Professional over
home edition) with SP3 here

Home Edition is already a version of XP. XP was released in Home and Professional versions. You can find out for sure what version of software you have by right-clicking on the desktop icon for "My Computer" (or on the "My Computer" entry on the Start Menu if the icon is not on your desktop), then clicking on "Properties" from the popup menu.

If you want to upgrade from XP Home to XP Professional, you can do that with the appropriate upgrade CD. But unless you are networking in an office setting, there really are no features in Pro that you don't have in Home.

If you still have questions, please post a follow up comment and I will try to help further.

Download windows xp

Nope.

Without the disk you cannot upgrade to Windows XP Pro, because both Windows XP Home and Windows XP Professional are two different edition / version.

So if you want to upgrade your current operating system from Windows XP Home then you have to spend money to buy Windows XP Pro

But if you want to upgrade the Service Pack then you can very well do it.

Click the link below to download Windows XP SP3 for your edition and install it. Before installing it make sure you have turned off your security programs or better install it from the SafeMode

http://www.microsoft.com/downloads/details.aspx?FamilyID=5b33b5a8-5e76-401f-be08-1e1555d4f3d4&displaylang=en

Good Luck

Windows XP Home vs Pro Edition Comparison Guide

Try this link
http://adamv.com/dev/articles/iis-on-xp-home

2.6gigs