UAC is Disable, make registry changes to allow cad

[alan159]

In our environment (weather right or wrong) we run with UAC disabled, I have UltraVNC installed as a service and when I am connected to a PC with UVNC and I click the CAD button it pop's up a warning windows and state's : UAC is Disable, make registry changes to allow cad. So what is the changes that are made to allow CAD? I thought it might have been winvnc.exe -softwarecad but when I run that before it doesn't seem to fix anything.

Any ideas or thoughts?