How to get the Vista taskbar to span multiple monitors?

I can't for the life of me get the vista taskbar to span multiple monitors.

I've searched and looked far and wide, and alas the only pseudo-solution i can find is Ultra-Mon, but a) it doesn't quite look the same and b) i don't want to have to pay for something that Windows really ought to be able to do out of the box.

Does anyone have a solution for this? Will this get addressed in Windows 7?

You can try Multi-Mon as a free alternative to Ultra-Mon.

Windows 7 doesn't have a multi-monitor taskbar. However, DisplayFusion** does. It's inexpensive, has full Windows 7 compatibility and a ton of other multi-monitor features as well (mouse shortcuts, hotkeys, titlebar buttons... etc). :)

(**I'm probably biased, because I'm the developer)

If you have an nvidia graphics card you can specify that you want the task bar to span two screens in the nview manager.