there's a great program you can use for deciphering kanji online (and its FREE!)..Its called "rikai-chan" and it'll work for both MAC and PC...You can go here to download it:
http://www.polarcloud.com/rikaichan/
The only down side (for some ppl) is that it only works with a firefox browswer...After you download the program you need to also download the english/japanese dictionary (theres multiple languages)..Once you've installed the program, all you have to do is click the smiley face on the lower right hand corner of your browser and it'll turn your rikai-chan on..After you've done that, you simply scroll over whatever kanji or hiragana you need deciphered and it'll not only tell you the hiragana meaning for the kanji, but also the english translation of any Japanese word...I've been studying Japanese for four years and this has been one of my most helpful tools..I was introduced to it by one of my teachers who required it for her online class...Let me know if you need any help with it!!