hi, thanks for the reply. In that case I think i'll go with internal installation.
But just to be honest, I did try sandisk class 4, that didn't work. I tried 2-3 other cards too, none did, not even by tethering. That's why I said I tried everything. Then I put in one of my other nook tablets sd card I was using to boot on that tablet (and that one is samsung class 4 8g). That worked but that too only with tethering. And as soon as that worked I put it here as update.
I really appreciate ppl taking out time on this community to help us amateurs. Thanks again