just burn it onto a cd.
it is a good practice to save all the Wf relevant emails, copy of the lic file, etc, into the folder where you hold the downloaded application; so you can burn them all onto a permanent cd.
I've just bought a license for Wordfast Pro, and they suggest making a backup copy of the software onto CD, as if it is lost it may not be replaced. Can anyone give me simple instructions how to do this? I don't know what file to copy for a start....
[Edited at 2010-09-21 07:52 GMT]