...I have a serious question, but when are we actually going to carry out an actual conversation?
Also, to add in my opinion, most Japanese cannot read romaji, therefore it is vital that you at least learn hiragana and katakana. It is possible to type in Japanese by going into your computer's control panel to add in the Japanese keyboard option. Or you could use a romaji to kana conversion application. This site is good for learning the first two writing systems:
http://www.manythings.org/q/kana.php?u=hiraganaGood luck with your studies, everyone!