Hello!
I know this is an old plugin but somehow it seems to work on WP 3.2.1.
I installed it...opened the config and added a block on "Top Left" with the code to show the block 100% width to be shown on page"A".
So far so good...
Now from where do I add widgets to a particularly page "A"? If I goto the widgets section, whatever widget I add will show on all pages