Networks

First U hav to Creat a Group (O U)
In OU add Users

Then Right Click on OU
Then Group policy and then click on edit(if Group policy allready created)
then for Internet Windows Setting ->internet setting Maintainence->Connection->Proxy Setting->then Define which sites u wanna to provide to ur users(One more thing if the site start with http like yahoo.com the u hav to put *.yahoo.com*;

and for folder permission u hav to provide them a home folder

like right click on user name-> then Properties->then Profile->home folder->connect-> then path of ur folder like share folder on ur server(u can also provide the IP)and then the user name

example

(server IP) (Share folder)(user name)
\\192.168.0.251\homefolder\akash
or
(Server Name)(share folder)
\\grub.com\homefolder\akash(user Name)

http://technet2.microsoft.com/windowsserver/en/technologies/featured/gp/default.mspx

and this one

http://technet2.microsoft.com/windowsserver/en/library/69780581-04f2-4321-ad10-24ab86c3eec61033.mspx?mfr=true

< forgot link :) >