Try making the changes you want to a reference comouter. Then in regedit export the key information. This will take the format of a .reg file. Put a call for the .reg file in a batch file and then roll out the batch file using SMS. If you ever have problems with users and roaming profiles, its sometimes handy to copu the reg files to each machine, I copy them to a folder called wint\regchange, if a user phones with a problem ie, Internet Explorer has lost proxy settings, I direct them to this folder and get them to double click the file, this updates the registry and bingo its working again