I'm not sure, but to be safe I would take the laptop and put it in target disk mode and copy the VPC onto your wife's machine, it doesn't take that much time and get's you on-line quick. Although the license allows you to install on both a desktop and laptop (I'm assuming your legally installing it on your wife's computer because you occassionally use that as your desktop machine), then, if the machines are networked, VPC performs a network check on UDP port 21790 to see if another instance of itself running. If it finds another copy with the same serial number, both copies will be disabled until one copy is shut down. I know why they do this, but if you want to test some Windows-to-Windows file trasfer routines over your network, it doesn't work (unless you tweak your firewall settings).