Hello Maryann,
It seems that you may not have the driver installed. To verify this select Applications > Promethean > ActivDriver.
If you do have the ActivDriver listed, to put the ActivManager icon back on the Menu bar select Applications > Promethean > ActivDriver. and double click on activmgr.
If you do not have a driver installed, you can install it from the link below.
(case# 285873)
Please ensure that you are not connected to the board while you are installing the driver.
Save the link below and then Run/ Install it.
Your password is: 9rSt5PyJ
Name: ActivDriver v5.9.16.dmg
Size: 48.10 MB
Expires: November 17, 2013
Thanks!