Creating Group Policy Windows Server 2008 R2

Hello guys,

I want to implement a group policy/policies across the network to perform the following;

1) Restart users PCs across the network on the last Friday of every month

2) Update the PCs with Microsoft patches or updates if any during the restart

3) Send a notification message on Wednesdays preceding that Friday to the users, informing them to save their work and close all the programs and files as their PCs will be restarted on Friday.

Any help on this would be greatly appreciated.

Thanks in advance

Cheers