maintaining deb mirror w/o online access

[PaulNM <Einstein9112@yahoo.com>]

I have a rather interesting problem.  I've recently lost my nice cable 
internet access, and will have to make due without any internet access 
at home for a while.  Since I have three machines networked at home - 
all running debian, I decided to keep my own mirror of Sarge.  Right now 
I'm using jigdo to get the sarge weeklies at my parent's house so I can 
burn them to cd-rw. This way I can bring the cds home and use apt-move 
or something to create the initial mirror.

There are two problems with this approach.
1: I'll only be getting main - no other section.
2: I can only update the mirror weekly when the jigdos are regenerated.

Is there anything that will let me just download what has changed (on a 
daily basis) so I can put it on zip disk to bring home?  I need to do 
this without maintaining a mirror on my parent's computer.

Any help appreciated,
      PaulNM