Can you split the Virus TI keyboard?

[ni-cad]

Or failing that.

Can I just mute individual keys somehow? At least then I could have some (note/sound free) key's to trigger samples with,
whilst the rest of the keyboard could be played as normal.

Please tell me this can be done, I've been searching this forum and it doesn't
look hopeful, questions on this subject seem to get left answered usually