nadrad

HEy guys, I have a software client i need to use to log into for my broadband access. However, the program works completely except for the part when i type in my user name and password and click login. There it disappears, instead of saying login successful, and when i run my mouse over the icon on the taskbar, it just disappears. Im stuck! I cant use my net unless i log in and the client stays on! Is there an emulator i could use or some other thing...