how to rate windows 7

Asslam o alaikum:
Mera name hai SHAN oR me aj aap ko btao ga
k windows 7 ko rate kese kia jata hai. . . . .
lets see. . . .
yaha upper side pr rate window likha ata hai. . .
meri window already rated hai. . . .
just one click and it will take some time. . . .
then your window will be rated. . . ..
thanx for watching. . . .