How have you disabled it? Using a tweaking program like xteq? This one has this option to disable the rightclick menu for taskbar and start button. It does it by adding the entry NoTrayContextMenu with the value 0x00000001 (1) to
Look if you have this entry and if so, change the value to 0.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS