To re-install it from scratch you will either need to start with the original installation executable you recieved. or an archive you've created through Impulse. or a new download from Impulse. I suggest you make an archive from Impulse by going into Impulse, go to the "My Software" tab, right-click on the ObjectDock icon and select "Archive Application". That will create an archive you can restore from within Impulse, but just a basic archive, you will want to backup more. To see where that archive was created, click on the white box icon in the top left of Impulse, click on "Preferences", click on "Folders" in new window, look at "Archive File Location".
Read Reply #1 here for the rest. The guy rambles way too much but I think he got it covered.
https://forums.wincustomize.com/340154