Thank You. I have made an usb-installation. I learned now how.
The next an more difficult task is: how to move the information from my XP an onto my 8.1 machine. May be there is a standard procedure.

I have to move my Opera Mail 1.0 from an XP-computer to a windows 8.1-computer.
I have installed the program on drive D. But now the installation has placed the e-mail-folders on drive C. I want to place the e-mailfolders on drive D. In the same folder as the program. In that way I can make a backup and restore more easy. But how is this to be done?

Thank You for the answer. I will start another thread because it will be easier for others to see if they are interested in the subject. I look forward to get help

I keep getting back to this forum, but it does not tell directly, that it is a forum for discussing Opera Mail 1.0.
Sad that I have to ask?
Jens Solvang DK