Can I use Debian DVD's to install on Ubuntu

[squareyes]

Hi all,
I have a 3 DVD set of Debian 4 "Etch", and was wondering if I can use 
them to
install applications like Scribus, Inkscape etc. on Ubuntu 7.04 ?

I have friends who have Ubuntu running on machines with no Internet access,
and thought if I could add the DVD's to their (mine too, have slow dial up)
apt.sources list and use them as repositories. Would save them bringing 
their boxes here
and installing via my slow dialup.

Are there any problems that may rear their ugly heads.

Many thanks in advance.
Take Care
Winton