HD Install :: apt-get

I'm at work now, cannot remeber all the error on DSL 8.1.1. i installed this to hd, but seem not to be able to run apt-get firefox, it always error out.

Also, would like to upgrade fluxbox, how would i go back doing this.

Try this:

sudo su
scite /etc/apt/sources.list (Change the word "stable" to "unstable" in the line that does not begin with a "#". Save the file and exit Scite)
apt-get update
apt-get install mozilla-firefox
exit

original here.