Resizing windows controls
According to the post here: RadioButton doesn't resize when you increase the Font size , Sara is suggesting that you should make your application consistent with itself. I agree. BTW: The suggestions from Saurabh about this reminded me of the olden days (from Windows 3.1 actually) when we were writing custom controls for windows applications.
Anyway, Does these kind of questions mean that we might endup with those VB 4.0 forms with huge green buttons all over again? The point of UI guidelines was to avoid such an eye sore. I think a better option, if this was being done to help the visually impaired, would be to test your application in a Large font (120DPI) setting.