Pro Tools 9 and 192 khz sesions - possible?

    Hi,
    is possible to set 24 bit with 192khz sesion in Pro Tools 9 with Virus Ti as external sound engine?
    When I start Pro Tools I see only alternative between 44,1 and 48 Khz..:(
    In windows setup panel I can select frequency up to 48 khz too.
    Virus has native 192khz frequency - how to set it in windows?
    I use: windows 7 x64 bit., 16GB RAM, 4 core AMD processor and Full Pro Tools 9 HD.
    Virus Ti Desktop with OS 4.5.0.16
    Thanx for any help and sugestions.

    As a USB 1.x device, there is not enough bandwidth to transmit multiple channels of >48k audio back to the host over USB. If you want to make use of the higher frequency rates, you must use the analog outs on the Virus and route them into another audio interface capable of capturing higher sample rates.