Virtual Switch Networking Not Started - Error A1004


I am using virtual PC for mac in order to have access to the internet for banking (the security settings of Safari does not allow me to do internet banking).

When starting virtual PC for mac (version 7) I get the message: virtual switch networking could not be started. Please notify Microsoft: Code A1004. Permissions for the support files were set correctly, but virtual switch failed to load.

I then cannot access any webpage with internet explorer, whereas I can with Safari. I am using Mac OSX Panther.

It is a new development. I haven't had this problem with virtual PC before.
Are you running OSX 10.4? If so the virtual switch driver is broken and Microsoft promises to get a new one working real soon now. Whenever that may be.