A buddy of mine, Jason Lambert, at work recommended a great open source software package called, “Portable Apps.” From portableapps.com website. You will need a spare USB drive. I recommend a minimum 4 GB USB flash drive. But the amount of free software is unreal.
You get Open Office (a free office style software suite), KeepSafe (a encrypted password safe), Firefox, Thunderbird, etc.
I highly recommend this download and it’s totally free.
Go to http://www.portableapps.com to get a copy of it. Enjoy! Tony