There are two decent sites for writing things and having native speakers judge them, which sounds like what you're looking for. Lang8, and livemocha. For livemocha you have to help others to learn (for free, anyhow), but I'm a spelling nut so that works for me.
I know! everybody say to speak with someone that knows japanese.... theres no people like that living near me.. like any people.I really want a japanese person to teach me hiragana and katakana and .... JAPANESE!