The following answer posted by "Eferz" is an alternative to going through that process.
"You can't put the items from the Spotlight app onto the Home Task Bar. The Spotlight app gets its weblinks from a Google RSS feed for Google TV. You can; however, create a bookmark for http://slingbox.com/gtv then instruct it to "Add to home screen" which will actually place it into your All Apps drawer. Then you can use GTV Home > GTV Menu > Customize home items then choose one of the seven apps to "Replace" with the shortcut of the bookmark from the All Apps drawer."