I am using a modem (ZTE USB Modem FFF1) to connect to internet and I want it to disconnect automatically after completing 90 MB (Downloaded data + Uploaded Data). Can anyone suggest how can I do this. I am using a desktop computer running on Windows 8 Consumer Preview. There's no router. I am using a dial up connection to connect. I just want to limit the data usage of my internet connection, considering sent data + received data.