Windows XP SP's?

Which service pack would be best for me to get?

 

Also how do I burn iso files? And when I install Windows XP from Windows ME. Will it erase all of my files that I have made?

 

SP2 is the most recent. It is the one you want.

http://www.majorgeeks.com/CDBurnerXP_d4242.html burns ISO files. What is an ISO file?

What your talking about is an upgrade installation. It shouldn't erase your files and settings, but there are a lot of 'shouldn'ts' in Windows. Back up everyting you want to keep. As far as upgrading from ME, I've heard it's not a good idea and a clean installation is preferable. I'm sure someone with ME and upgrade experience will hop in to give you more facts soon.