Using loop devices in Debian

[Richard Owlett <rowlett@cloud85.net>]

Having read http://en.wikipedia.org/wiki/Loop_device, I suspect 
using a loop device will alleviate some of my problems.

I'm doing a series of installs to find an optimum configuration 
for my personal needs.
As I DO NOT have high speed internet available I have purchased a 
set of Squeeze DVD's.

My impression is that I should be able to copy the set of DVD's 
to a flash drive and access as loop device to save physically 
handling DVD's when using apt-get etc.

Could I mount it as a loop device and do installs from the flash 
drive. I've already have created several versions of preseed.cfg 
to address various issues.

My Google attempts have turned either articles that are too broad 
and general (such as the Wikipedia reference) or if are dealing 
with Debian are posts to mailing list focusing on a specific detail.

Could some one point to good reference so that I might ask good 
questions.

TIA