Most sequencer programs have a 'save as' feature...that will let you save in the SMF format (Midi0). The Casio software will also convert (it is free).

There are a couple of other forum options: http://www.originalz.com/casio/casio_bbs/

and the Casio mirror of it's old site: http://www.casio.ie/music/forum/

Casio's main forum is still off (as far as I know)