yasamoka wroteIf your ADSL modem is connected to a single PC, you can use something like DU meter to monitor data consumption. However, if you're using a router, and the stock firmware does not have a consumption monitoring tool built in, you could flash OpenWRT / DD-WRT on your router (if it's supported) and use packages like bwmon. Be warned that it is somewhat complex to get the package running with the correct rules and generating graphs (with another package), if you are not used to the Linux environment (and I am one of those who are not used to it).
Thanks & I know this besides i only use linux for servers , what i am searching for is a windows solution something like a simple GUI software anyways i am using now bandwith meter pro if anyone is interested just google the name .
p.s : thank u khalil13 for the article link .