Thus far, i've only used Windows XP's Group Policy Editor (GPE) to fix the QoS Packet Scheduler. There are about a million other tweaks/modifications you can make via GPE as opposed to RegEdit, but i haven't been able to find a great guide of recommendations.

For all the Windows XP users out there, what tweaks do you use the Group Policy Editor for? Alternately, a link to a thorough GPE guide would be greatly appreciated.

James