what languages you understand better than english? You seem french (franšais).
I will say it in simpler English because I don't know french.
I hope Google Translate
You have a Windows Xp computer. You have a Windows 7 cd. You place this CD in the CD reader of your computer. Do you want it to install windows 7 in your computer?
You wait and wait, do you reach this
? (in your language)