Blockbuster.com is not usable for Blockbuster@home. There is a separate fee. Also, I just got it to load on Safari, but it took 3 refreshes.
Actually that isn't correct. I am logged into Blockbuster.com as I type this and can manage my queue just fine from that site. In fact that site is better than the one you access from the Dish site, although not Netflix quality good...still much better. I have used it nearly every day since October and never had one problem with Firefox which is the only browser I've ever used with it.
Oh, and no separate fee...your Dish/Blockbuster login should work just fine on it, mine does.