Bold can be handled for any control having a Font property object via the
Font's Bold property. From the IDE, highlight the control, click on Font in
the Properties window and click the small button with the dot-dot-dot
caption, select Bold from the list. In code, you can do it this way...
ControlName.Font.Bold = True
where ControlName is the actual name of your control.
I made two mistakes in my answer... one, I thought I was in a VB (compiled)
newsgroup when I answered and, two, I answered for the wrong control
(CommandButton instead of OptionButton).