I don't see Home Switcher in the Market. Perhaps it has changed names since you downloaded it...?
Thats weird? I checked just now and its still called Home Switcher. Search the guy that made it and it should come up. His name is "ymst" without the quotes, of course ^^.
Also kinda off topic, but i found this epic wallpapers app that is holding me over until i can root my leaked version of 2.1
Its called Flikie Wallpapers HD if anyone is interested! (BTW I'm not advertising for them, I just found it on the dolphin browser )