[skydeaner]

Yeah the default gb launcher doessnt support landscape. You have plenty of choices though. Go launcher, launcher pro, adw, gde, one with some cbicks name is out now, i think its rebecca or some shit.... or maybe it started with a D.
Edit
Regina launcher is that girl named one..... I dub it vagina launcher,because Regina is a terrible name to begin with. It has some pretty cool effects though.

And to the Guy above me, you can get a flashable zip or you can nandroid back to a sense rom and update it through the menu