When it comes to kanji...
私は知りません。[I don't understand]
http://www.freetranslation.com/This site does translations, VERY professional and correct translations (I tested it on my friend Keiko from Japan.) and they're all for free. They may be a little off though... but simple phrases are always right. :3 The following is done from using the translator. xD
私は多少の日本語を話すことができます。このテキストはオンラインの翻訳者からです。私は複雑なフレーズのための十分な日本語を話しません。[I can speak a little Japanese. This text is from the translator of online. I do not speak sufficient Japanese for a complicated phrase.]
You need certain programs and such to type Japanese characters. But if you Google "Japanese Hiragana" then you should get a chart of their Phoentic Alphabet. =D