Further on the VWS migration (and this is information I gleaned from the old Ambient forum site prior to my own migration).
If your path to the VWS installation directory is different on the new machine (D:\VWS instead of C:\VWS, for example), you will need to edit some things after the above-mentioned steps.
Here is the complete set of instructions I saved from the Ambient forum:
Problem
I would like to move Virtual Weather Station from one computer to
another (or one drive or directory to another) without losing my
settings.
Solution
1. Copy the entire \vws directory from one computer (or drive) to
another. To simplify the installation, copy all of the contents to the
same pathname (for example, if VWS is installed on c:\vws on one
computer, copy the directory to c:\vws on the other computer).
2. Install Virtual Weather Station from your CD or download center and
install into the same directory as created on the new computer.
Discussion
If you install Virtual Weather Station into a different directory,
there are several additional steps.
1. Select Settings | Multiple Station Settings and select Recall
Existing Station. Browse to the new directory location on the new
computer. For example, if you install it into the c:\vws drive, browse
to the c:\vws drive.
2. There are several customized file paths you will need to change.
Select the following windows from the menubar and change to valid
directory locations.
3. Settings | CSV Export
4. Settings | Jpeg File Settings
5. Settings | WeatherVoice
6. Settings | WeatherCentral Settings
7. Internet | HTML Settings
8. Internet | Upload File
9. Internet | Upload Folder
If you copied the files from one computer to a CD and then to the other
computer in Step (1), this sets all of the copied files to "read only".
To change this, on the new computer, right click on the \vws directory,
select Properties and uncheck the read only check box.
