WIN7+
gpresult /r /z > gpresult_%date%.txt

WINXP
gpresult > gpresult_%date%.txt

Microsoft (R) Windows (R) Operating System Group Policy Result tool v2.0
Copyright (C) Microsoft Corp. 1981-2001

Created On 1/27/2015 at 9:55:17 AM
RSOP data for ROGUEHELPDESK.COM\username on HOSTNAME1234 : Logging Mode
——————————————————————–

OS Configuration: Member Workstation
OS Version: 6.1.7601
Site Name: N/A
Roaming Profile: N/A
Local Profile: C:\Users\username
Connected over a slow link?: No