Headsets for VOIP (RJ11) and USB?

[minnanotabo]

Hi guys. I tried searching for these, but they may be non-existent. Basically, I'm looking for a headset that will work with a VOIP phone (i.e. Polycom SoundPoint IP 501) using the standard RJ11 connector, while also supporting USB so I can plug the headset into my computer to use for gaming.

I tried looking into Plantronics products, but can't seem to find anything like that. Any ideas?

Thanks