MacBook Pro's don't suffer from this however. It's very odd that BootCamp'd it'd not pick up on the proper processor/cores as it is, essentialy at that point, a WinTel box (complete with BIOS as far as Windows is aware). Are you sure Windows isn't displaying a combined graph for all cores in Task Manager? XP sees 2 cores, 7 sees 2 cores, Vbox sees 2 cores and so on and so forth; which is correct as being a 2009 vintage MBP it's got a Core 2 Duo. Curiously though I get double the RAM assigned to the 9400M in Windows than OS X allocates (512v256).

Make sure you let BootCamp burn the disk with the drivers on it. Beyond that poke around in device manager (in Windows via Control Panel) see if anything is 'unknown' or marked as not working. If the drivers are in... you might need to turn up the volume (assuming Vista has 7's version of PulseAudio/CoreAudio and individual volume controls per app). If normal sound is working and TOR's sound isn't hmm... not sure but I'd raise it with EA/Bioware support. as you are running Windows and should be under support.