I have restarted my Japanese quest thanks to this thread and the other language thread. I found a
kana practice website and am working my way through hiragana at the moment. Once I've done that I plan to start learning from the web (there's a wikibook at wikibooks.org). This should allow me to take a "traditional" approach (rather than using romaji for everything). Currently I have 3 columns (a, e, i, u, o, ka, ke, ki, ku, ko, sa, se, shi, su, so) pretty much down. IIRC to be able to read a newspaper one needs around 1,900 kanji. If I learn one a day then that should only take 6 years or so.
If anyone else is tempted to try this,
read this first. If that doesn't put you off (or ruin your keyboard) then you may just be stupid enough to try.