How do I install all the dependencies of IceWeasel "iceweasel_2.0.0.19-0etch1_i386.deb"

When I ran the install, I got the following errors:

dpkg: dependency problems prevent configuration of iceweasel:
iceweasel depends on fontconfig; however:
Package fontconfig is not installed.
iceweasel depends on psmisc; however:
Package psmisc is not installed.
iceweasel depends on libatk1.0-0 (>= 1.12.2); however:
Package libatk1.0-0 is not installed.
iceweasel depends on libcairo2 (>= 1.2.4); however:
Package libcairo2 is not installed.
iceweasel depends on libfontconfig1 (>= 2.4.0); however:
Package libfontconfig1 is not installed.
iceweasel depends on libfreetype6 (>= 2.2); however:
Package libfreetype6 is not installed.
iceweasel depends on libglib2.0-0 (>= 2.12.0); however:
Package libglib2.0-0 is not installed.
iceweasel depends on libgtk2.0-0 (>= 2.8.0); however:
Package libgtk2.0-0 is not installed.
iceweasel depends on libjpeg62; however:
Package libjpeg62 is not installed.
iceweasel depends on libmyspell3c2; however:
Package libmyspell3c2 is not installed.
iceweasel depends on libpango1.0-0 (>= 1.14.8); however:
Package libpango1.0-0 is not installed.
iceweasel depends on libpng12-0 (>= 1.2.13-4); however:
Package libpng12-0 is not installed.
iceweasel depends on libx11-6; however:
Package libx11-6 is not installed.
iceweasel depends on libxft2 (>> 2.1.1); however:
Package libxft2 is not installed.
iceweasel depends on libxinerama1; however:
Package libxinerama1 is not installed.
iceweasel depends on libxp6; however:
Package libxp6 is not installed.
iceweasel depends on libxrender1; however:
Package libxrender1 is not installed.
iceweasel depends on libxt6; however:
Package libxt6 is not installed.
dpkg: error processing iceweasel (--install):
dependency problems - leaving unconfigured
Errors were encountered while processing:
iceweasel

Ok, now I got further. Here's what I did.

I did a sudo apt-get update & sudo apt-get upgrade

Then I did this twice since the first time I hadn't done the previous two things.
sudo aptitude -t etch install iceweasel

On the second time around, here's what I got:

Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initializing package states... Done
Writing extended state information... Done
Reading task descriptions... Done
Building tag database... Done
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.
Writing extended state information... Done

When I tryed to run, the program, I get this:

$ iceweasel

(firefox-bin:5890): Gtk-WARNING **: cannot open display:

How do I solve this?

iceweasel is installed. You problem is you don't have a working DISPLAY. Enable X forwarding.

How do I get X-Fowarding through ssh?