Group Policy settings for IE6

I've been asked to alter Win2000 and WinXP group policies to set the
following options in Internet Explorer6;

Disable Script Debugging (Internet Explorer) Enabled
Disable Script Debugging (Other) Enabled
Reuse Windows for Launching Shortcuts Disabled

I've searched through the Group Policy but cannot find the relevant setting.
Can this be done using group policy, or do I have to push out registry
settings. If so, does anyone know which registry settings to push out?

All ideas gratefully accepted.

I'm using Zfd4.01.