Spot Light ,lighting up a set

I have been learning c# and slowly producing my game when a friend asked me to produce a interactive Conference set. This was fine but i have hit a problem.
If you have ever seen a show or conference set you have some lights that uplight the set, i cannot seam to reproduce this in Unity. Dose anyone have any ideas?

Please see image that i am trying to reproduce.

alt text

Thanks

Cybershead

GameObject/ Create Other/ SpotLight. Set the color to purple. Set the spot angle to about 25 to 30. Rotate so cone points up (x = -90). You may need to increase the intensity. Place near wall. Repeat as needed.