Automatic resize two windows to fit desktop

I have a single monitor, but with a wide resolution. Some times it would be helpful to have two applications running next to each other. Is there a tool to quickly tell windows to resize the two applications to fit the desktop? Perhaps even with an option to make the one application use 75% and the other 25%

I know the Windows 7 Alt+left/right arrow feature, which is nice, but still needs too many clicks.

With Windows 7 you can just pull the windows to the left or right edge of the screen. One click :P

1. Click the first window, then hit Window + Left arrow.

2. Then, click the second window (on the same monitor) and hit Window + Right arrow.

You can Ctrl+Click each of the windows on the task bar then right click and select Tile Vertically