Each patch on the Virus has a + and a - value which determines the affect the pitch wheel has, it is possible to set this value to 0 so that the wheel has no affect. You can easily edit this in VC, although for me to advise you how you'd have to wait til I get home from work and look at my Virus.
You can use Envelopes or LFO to automate the pitch. You can even consider that the Arpeggiator, in the end, is actually automating the pitch...
AFAIK, you can't change (modulate) realtime the amount of Pitch bending 
What DAW are you using eugenebalt? I don't think Pitch Bend is a standard CC control in many synths, I think that being one of your main reason for buying a Virus is a little daft considering all methods I'm aware of can aso be applied to pretty much any other synth... Anyways back to my original question, what DAW are you using?
Ah you want to automate, by using a DAW, external sequencer or the like, the pitch of the oscillators. With MIDI you use RPN parameters to control Master Fine Tunning (RPN 0, 1) and even Caorse Tunning (RPN 0, 2) Of course you can also do this individually for each oscillator. Here you go:
- OSC1 semi tune: MIDI CC 20 from 0-127
- OSC1 detune: MIDI CC 26 from 0-127
- OSC2 semi tune: MIDI CC 25 from 0-127
- OSC2 detune: MISI CC 23 from 0-127
- For OSC3 you use Sysex.
Anyway, record the pitch bend on the DAW to confirm the special MIDI messages used and copy those to your liking.
You might have better luck searching how you'd do this in in FL instead of asking about the Virus in general. I could try to advise you but I expect my advice will only be relavent to Logic Pro.
Are you working with all your MIDI tracks armed at once? The only other thing I can think about is checking the MIDI channels you are routing to.
