Rotated comics on a Nook

[Husker]

I'm trying to find out how to get comics (non-manga, converted from .cbr and .cbz) to rotate on a nook (black and white) so I can view the turn it on its side and look at, say, the top half and then the bottom half. I can get them to convert normally just fine, they're just too small to read without a magnifying glass or ruining my eyesight.

I read in the comics sticky how people have done this for other e-readers but never saw anything for a nook despite some a searching, and all the options on Calibre I've tried so far have failed.

Anyone have any advice for me? or a thread to point me to?