PowerWeb is already running. If you want to re-install, first shut PowerWeb down and then run install.
You must first be connected to the Internet to obtain a license number. You do not need to be connected to the Internet after you have obtained a license number.
INSTALL if you already have a License Number, and are not upgrading.
UPDATE if you already have a Licensed server Users of version 3.x or earlier must first enrol for a test drive and then upgrade their license.