Disabling Dr. Watson PopUps

Hi,

i am new to XPe,and have a problem in trying to disable the popups from Dr.
Watson.

i have tried changing the re. key but that doesnt work. ->
Hkey_local_machine/Software/Microsoft/DrWatson and set the value under
VisualNotification from 1 to 0

i have also tried the following but no luck ->
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Windows
"ErrorMode"=dword:00000000

if anyone could pelase help.

Thanks

Raggy