it says install
No. You can install windows 8 directly from a USB or CD.
Yes. A "recovery CD" will usually reinstall Windows. True
You can upgrade to SP3 without a CD. You cannot install the entire system from scratch without a CD. yes. first install XP sp2 with CD, then upgrade via Internet.
You cannot install Windows ME over Windows XP from within XP. If you must (for whatever reason) install Windows ME, you will need to boot from the CD.
You can buy it from Steam or install it with the CD.
make sure you install from a bootable cd.
open CD drive insert windows vista disk and run it
Buy and boot from a Windows XP cd.
install windows first and then install linux, there should be a partitioner in the live cd. or just use wubi
cant
normally that's the CD you used to install windows
1) Browse to the CD from inside Windows and click on the setup.exe file or 2) restart the computer and when the prompt says, press any key to run setup from the CD.