browsing webpages

Hi all,

Has anyone been able to successfully browse webpages using ubuntu and orca
along with the bundled version of muscle the Firefox?  I am using ubuntu
version 7.04.  The same question applies to evolution.  Has anyone been
successfully able to read HTML e-mail?  I am able to tab to the HTML
container but after that, I am unable to read anything using the arrow keys.
Am I supposed to be doing something different?

Pranav