This game brings back so many memories of college and friends trying to figure out how to beat it. For anyone who is now trying to play it on your smartphone, this site helped me tremendously with the commands that you can use in the game:
http://infocom.elsewhere.org/gallery/hhgttg/hhgttg.html
The biggie here is the command "RESTORE". This is the way you can load a previously saved game. I think I tried everything else under the sun to get my SAVEd game back.
I should try to find that box...I bet that "fluff" would go for big bucks on eBay now......
Enjoy!