Stop screen from turning off during call

[Guest Em]

I've read many threads on this for HTC devices, particularly with reference to the registry key HKLM\Drivers\BuiltIn\RIL\EnableFastDormandDisplayDuringCall. However this doesn't seem to apply to the Touch Dual (registry key doesn't even exist and creating it doesn't make any difference).

I can't find anything that does the job for the TD.

Any suggestions?

Thanks,

Mark