I picked up a new tip today for Yahoo! Messenger for Vista Beta. By using the keyboard and the scroll wheel on your mouse, you can increase or reduce the size of your contacts in your list, or zoom in and out of your IM conversation. Here’s how it works…
Click anywhere on your Yahoo! Messenger for Vista contact list window. Then hold down the Ctrl key and with your other hand, move the scroll wheel on your mouse up and down. You’ll see the contact list size menu appear and as your roll the wheel, the lever will move and the size of your contacts will change.
The same thing works in the IM window. Click anywhere in the IM window, then hold Ctrl while scrolling your mouse wheel. Voila – instant enlargement of your text (and your emoticons).