So I finally finished my VERNAM LFSR program. You can test it out and see encryption/decryption in action! You can either have it straight encrypt/decrypt (which will yield both the same input and output), or you can encrypt and then change the seed/key values (which is what someone intercepting would try to use as seed/keys if they didn't know what the correct values were) and try to decrypt it and see the garbage text it pulls out.
Runs on Windows XP and above.
Get it here: http://www.mediafire.com/?7l3048k7lbbs2mt
This beast took about 15 hours to make (it looks simple but there is a ton of math involved)