Problem Opening MS 6.0

Dear all,
I have problem opening the MS visualizer. It says me that, "Materials Visualizer cannot start because it cannot find a valid license.
Click the Details button for more information.

Would you like to start the Accelrys Licensing Wizard to fix the problem?

Click "Yes" to start the Wizard.
Click "No" to quit."

When i click "yes" to start the wizard, it takes to the Licensing. I have to check "connect to remote license server". But it does not fix the problem. 

Three Months ago i had the same problem opening MS 6.0 in my laptop. I have tried everything, like adding port to the firewall and stuff. Now it's showing the same problem in my desktop. But, if i go my friends home, and try to connect there using their network, It works fine. So, i dont think it has to do anything with the firewall. Please help me in this.