Most of the SysEx items are compatible with the Virus C -- which itself was compatible with the earlier models. I would suggest that you download the Virus C OS 5.5 Manual from the Access site; it has a very good description of the C's SysEx.
Also, for things like cutoff, if one sets Page A to MIDI, rather than SysEx, all of the knobs and such have MIDI CC# contols.
Regards,
-BW
Bruce Wahler
AshbySolutions.com?
http://music.ashbysolutions.com
bruce@ashbysolutions.com