How can I get VBA to remember the last used selection for a group of Option
Buttons in UserForm1?

I have these buttons in a group in UserForm1:
OptionButton1
OptionButton2
OptionButton3
OptionButton4
OptionButton5

If the user selects OptionButton3 on his last visit, I would like this
button to remain checked the next time he displays UserForm1.
Say another week later, if he selects OptionButton5, I'd like the UserForm
to remember this selection being the last used selection.
This is exactly how the buttons in ToolsOption appears.

Thanks a lot.

--
Edmund
(Using Excel 2000)