"internal-only" Composition/recording?, Need help with software setup! Options

[Turner]

Hello -

I currently have a G3 400, a Casio CTK-601 keyboard, and a few programs - most notably (pun intended? maybe..) Native Instruments' FM7. Printmusic Demo... not much else... Pro Tools Free. Not too familiar with it yet. Electric guitar. (Soon may get Roland GI-20)

Ideally, I would like to be able to:

-Score (and record real-time) to standard staves in a program such as Printmusic, and use it to drive the FM7 and whatever other software synths I may get;

-Sequence

-Record real-time from my guitar (this part I'm ok with)

-finally, create an "internal-only" recording in a mixing environment with the final audio files suitable to burn to CDs and/or MP3.

Any guidance greatly appreciated!

Cheers,
Andrew