Sending a copy of Calibre to a friend

I made a friend on my travels in Burma who reads 19th century British fiction. As you can imagine, not so easy to come by there. I'm burning a DVD for him, made up from books on Gutenberg (he has a computer but only a flaky internet connection)
I thought of adding a copy of Calibre mobile as otherwise he will probably only be able to read plain text on the computer, and his phone has a tiny screen.
Would this be acceptable, do you think? Kovid?
Also can anyone suggest other useful small low overhead reading software that will run on XP?
Thanks for your ideas