AMD Graphics on Debian 7.4

[ray <ray@aarden.us>]

The netinstall did not recognize the HD 7770 card.  

The AMD Catalyst notes page states the supported distros to be: 
Red Hat Enterprise Linux Suite 6.3 and 6.4 
SUSE Linux Enterprise 11 SP3 
OpenSUSE 11.4 and 12.1 
Ubuntu 12.04.2 and 13.04  

So I looked for what needs to be done to get drivers working on Debian 7.4.

I downloaded the Catalyst installation per:
http://support.amd.com/en-us/kb-articles/Pages/Catalyst-Linux-Installer-Notes.aspx#

Then:
sudo sh ./amd-catalyst-13.12-linux-x86.x86_64.run --listpkg

which produces:

Debian Packages:
    Debian/sid
    Debian/unstable
    Debian/etch
    Debian/stable
    Debian/lenny
    Debian/testing
    Debian/experimental

Well, I am running wheezy, Debian 7.4.  So I tried:
sh ./amd-catalyst-13.12-linux-x86.x86_64.run --buildpkg Debian/experimental

which produced:
Generating package: Debian/experimental
Error: Distro Version entered incorrectly or not supported, use --listpkg to identify valid distro versions

I tried the same thing with Debian/wheezy, and got the same message.

Any idea how I may get the card to work in 7.4?

What may be the challenges of installing one of:
Debian/lenny
Debian/testing
Debian/experimental

then installing the Catalyst package, then upgrading to 7.4?
 
Ray

-------------------------
 
MB Big Bang-XPower II, CPU Intel i7-3930K CPU @ 3.20GHz x12, 
GPU Sapphire 7770, RAM 32GB, 1 TB HDD, 4 ea 64 GB SSD, PSU 850W, 
Windows 8, Debian 7.4 (wheezy) 64-bit, GNOME 3.4.2