Please read this and if u understand it please explain me how to do it or if it is a small application, please make one and give me. This is from an email i got from my friend.

"The application must execute at user logon
Basically when a user logon it need to read an attribute in the schema of the user eg in vb script it will be getobject ("<A href="ldap://DN NAme of object">LDAP://DN NAme of object") all my users are in one OU so basically you search for the user info in the schema..
The value of he schema attribute is then pass to the registry

eg you can do this an i can change the parameters
User ABC logs on to the network... The scripts the will take user ABC user info and bind to AD User Info and get the attribute value to add to the registry... Once it gets the attribute it adds it to the registry... if the value in AD is blank it does nothing... if the value in the AD is different that the on in the HKCU reg key change it to the AD values... If no value in HKCU change to the AD values... Hence the AD value is always presidence..."