656

go to start>>accessories>>calculator

there is a hex converter

6*1=6
5*16^1=80
6*16^2=1536

1536+80+6=1622

edit: oh...u alrdy tried windows calculator...dont know why its not working 4 u...g2g...if u need more help just post here...im sure som1 will help...or u could pm me if u need