There are a couple of ways to accomplish an installation without the Internet. The easiest would be to purchase a CD from one of the many companies selling them.
shares part of the price with the developers.
is cheaper and offers great service
Or if you live in the states you can buy a boxed set of Ubuntu at BestBuy or do a google for "buy name-of-distribution"
You can also order a free copy of Ubuntu - and they even pay the shipping but it may take a week or two.
If all that fails send me a note with your address and I'll send you one free.
Hang in there - Linux is worth it.