How do I download a python/GUI builder to Wheezy rasp Ian.

I wrote a python program in Deb6 on the RPi which worked ok. I have now loaded Wheezy rasp Ian onto another Sd card but all the python programming appears different. However I would like to run the same program but adding a GUI on the Wheezy. I thought that maybe GLADE3 and maybe pygtk might be a useful combination for that. So I tried entering onto LX terminal "apt-get install python-gtk python-glade3" it said it could not find them ! I am getting very lost and frustrated with unix type systems. Please could someone show me what I need to enter to download/install a suitable combination of say GLADE3 and a suitable python version to go with it , I am not overly familiar with unix !!!!! Many thanks.
MM

After much rummaging around I found that the following installed Glade to my Wheezy card :-
Sudo apt-get update
Sudo apt-get install glade

This loaded glade ok and it would appear gtk as well.
Just got to work out how to build the gui and incorporate my program.
MM

Well played with GLADE during the night and it seems to be working. Quite a learning curve though !
MM