Dean,
Out of interest which Linux distro are you using and are you using the RailPro software (in virtual windows) on that machine?
I have been playing around with a couple of distros with WinE to see if a viable option exists for Linux (and Mac, WinE is availble for Mac as well) users to run RP software without having to buy additional software, though they may have to install additional software.
I actually had RP software running in WinE, but I couldn't get it to see the internet or the hardware. I was running Linux in a virtual environment so essentially I was running a virtual environment inside another virtual environment so that may have stuffed things up a bit.
- Tim