The problem here is simply that you are trying to install what you do
not have the required dependencies for. The problem is not Wheezy 7.3,
dpkg/apt nor TDE.. What is on these dvd's is not enough. It does not
matter whether you use apt-get or aptitude.
If you can't network this box to the repos all you can do is identify
exactly what packages are missing, download them from another networked
box to a removable, then transfer them to /var/cache/apt/archives.
The following packages have unmet dependencies:
kde-trinity : Depends: kde-core-trinity (>= 5:47) but it is not going
to be installed
Clue: find out why kde-core-trinity won't install and work back from
there. I have had to do this many times, working with TDE and Debian
Sid. Good luck to you! It will be hard work.
D