When I installed launchbox it just "knew" about all the games I had installed on my PC from steam, windows, etc.  I installed a new game in steam and launchbox didn't know about it.  So, I wanted to rescan my library.  I deleted my "computers" section, but I can't figure out how to re-scan it.  When I select "import steam", it wants me to configure api keys, and urls and stuff.  I know i didn't do that stuff the first time.  How do i go about re-importing my game list?