Greetings Howell,

The Power Panel software works fine in XP, I haven't used Vista as yet with the software but i believe it also works fine.

You will need to get to the setup page within the Power Panel. If the setup pages does not come on when you restart then this feature is disabled, you need to check the SW1 dip switch on the back of the unit and to set it back to 1 position for the setup and run modes to appear.

Then check the computer Interface and match the baud rate and stop bits etc with your XP computer settings. The XP defaults at 9600 but the Power Panel could be setup for 38.4. Hope this helps.

Cheers