As promised, the Tabbed dialogs (aka property sheets) are here.
They work pretty well, although it's navigation takes a bit to get used to.
basicaly, you gou forward with the TAB key.
To enter the dialog you use the arrow down key.
to go back to the tabs, you use the arrow up key.
To go down to the push buttons you use the arrow down key (caveat: if the control you are on consumes the arrow down key, you can't do this, just move to the next control and try again...)
To go back to the window from the push buttons use the arrow up key.
Hope this reads clearly than it seems to me, but sorry, is the way it is... :-)