I'm trying to install the adsense preview tool, but the .reg file I downloaded simply opens in notepad instead of adding its contents to my registry. Can anyone help me fix this?
You need to import it, this may help: http://www.eolsoft.com/freeware/registry_jumper/regedit_switches.htm
select the file by clicking the right mouse button. You should see the "merge" option. click on it and that's OK. Remember Google adsense preview tool work only with Microsoft internet explorer.