It was fun, bit challenging too. Always wanted to try my hand at cracking some code.
Here are some of the tools I used:
* http://tomacorp.com/codes/workbench.html
* http://www.visca.com/regexdict/
* http://www.simonsingh.net/The_Black_Chamber/hintsandtips.htm
My Solution: Deciphered Cryptoquotes (click to open)