Make sure that you save ANY pertinent data to an external source, since when you do an upgrade from XP, if you do not, you will lose everything. Hopefully your computer hardware is up to the task, you might want to do a bit of research as to recommended hardware parameters to do the upgrade, ram, drivespace, etc. Also, be advised that some and much, older software may not be compatible with Win 7.
I am using Window XP O S but I want to upgrade window xp to window vista 64 bits O S
please kindly guide me