WMS 2011 on Ncomputing L300

Hi,

I am setting up a test center using a Host PC with WMS 2011 and Ncomputing L300 devices as my access points. Downloaded WMS 2011 evaluation copy and purchased the product key and 50 CAL through Volume Licensing.

My troubles are:

1. I get a message telling me to update the display drivers for the hardware. Where do i get display drivers for WMS 2011. My Host PC/Server is HP pavilion Elite e9250t and the HO website has no drivers for this OS.
2. Second Message is for me to have a usb hub with a keyboard and mouse attached to it be connected to the computer. I am using a LAN setup, so cant figure out why i am being asked for USB station/hub.
3. Thirdly and more confusing is another message telling me there is a keyboard and mouse attched to the root hub that i should unplug.
4. License- i have purchased the product key(WMS 2011 Premium) and CAL licenses. Unable to activate the software online and the number +22520310500 given for Rwanda is not going through.

Any help in resolving the above issues will be highly appreciated.