If you live on the east coast and the weather is good tomorrow night you might try looking out the window towards the south and east at around 9:20 pm.
You may be able to see the glow of the Space Shuttle’s engine. I don’t know how much would be visible.
The forecast for Wednesday night is partial clouds so we should luck out.
You might want to connect to NASA TV where they have a live feed in case the launch is delayed.
SPACE.com — Night Shuttle Launch Visible from Most of East Coast