My mistake, it seems when I did the replacement step of that tutorial it didn't replace some of the old fonts so I assumed they couldn't be changed. Went back and changed all of them now and everything seems fine. Thanks again
Edit:
Actually you know what, I haven't been able to change this
The title bar. I tried to bold it through the Windows Appearances/Colors section but it won't change. I'm not sure which line of code in that file you are supposed to edit, controls the title bar though.