how can one register or activate win 7
i got tools but i can not understand

You need an internet connection to activate it (Win7). If you don't have an internet connection, then I would suggest that you switch to Linux... :-) Windows will give you some time (about 30 days or so, I think) to activate it, before it "bricks" your system.

click to open windows activation if youcan not activate online, it gives you a freephone number to ring its automated and will give you some numbers type in to activtate. very easy process