Changing the 'Mark item as read when selection changes' at runtime

Hi,

Outlook version 2007
VS2008
Using VSTO and Redemption

I need to change the following settings at runtime

Mark items as read when viewed in the Reading Pane
Wait [ ] seconds before marking the item as read.
Mark item as read when selection changes.

All the above settings are on a form found here:

Tools --> Options --> Other --> Reading Pane

The registry settings are stored in

[HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Preferences]

I know how to change the registry settings but I don't know to re-load these
settings again without closing outlook and re-openning it again (which I
don't want to do).

Any help would be greatly appreciated. I've been stuck on this for a
lo......ng time.

Thanks