Debian :: Save On CD D/loaded Programs For Later Installs?

On top of the what's installed from the Debian 6.01 live CD I add the secuirty updates and a small number of programs (Audacity, OpenShot, AbiWord, get_iplayer, ripit and SMPlayer). Because at present while in a phase of distro-hopping I tend to fiddle a bit with new distros and reinstall them more often than spend time undoing a more complex mess, can the added programs be stored so that they don't need to be downloaded again,o the dependencies complicate this or make it impossible? I'm imagining hopefully some folder of .deb files that exist after downloading that I can put on a CD for repeated use. Sorry if I'm being naive.

If this can be done, a jargon-free set of steps would be much appreciated. I use Mobile Broadband with a low monthly limit so it will help. Though I forget the method now, I did once when using Linux Mint use some 'script' that would enable me to put programs on a CD to download at my parents' home when I had no internet, but it was hit and miss it seemed, with missing dependencies galore.