well, if you got firefox (i downloaded ff portable just for this, though in the end i didn't need it) you can get check4change named add-on for it, paint the "error" word and let it refresh it for you during intervals you decide yourself until the "error" text changes (aka, isn't there anymore) and just leave it running on itself there, it will stop refreshing once the page changes, leaving you with your key
This worked eventually, thanks!
Can't d/l the .iso, but I have my key.