The question is simple, the solution seems to be difficult to find:

How do I download messages from a certain timeframe only when using a newly installed Windows Live Mail with a POP client?

I have thousands of e-mails on the server that have previously been downloaded.

The old Windows Live Mail directory containing all of these e-mails has been moved and saved before the reinstall and I do not want to redownload all of these messages as it would take an entire day and would be completely meaningless.