There is no way to disable hyper threading through Windows, like you can through the BIOS. If the BIOS does not have the option to turn it off, msconfig would seem to be the only option.
Yeah, I was afraid of that.
And yeah, I can set anywhere from 1-4 cores, however, I'd like to have 2 actual cores instead of 1C + HT = 2T. Seems like there isn't a way to do that....