Hello ncool,
Please answer my last question:
What does gpresult /h %userprofile%\desktop\report.html say?
You can only use this command on Windows 7 not XP.
Does the scheduled task not apply on Windows 7 and Windows XP?
Please also provide the XML file of your preference item.
You need to right-click on the preference and choose All Tasks > Display Xml.
MVP Group Policy - Mythen, Insiderinfos und Troubleshooting zum Thema GPOs: Let's go, use GPO!