In speaking to our R and D managers, they posed a good question. What about their desktop machines (relatively New Dell PCs), have them automatically shutdown and reboot, say at 8:00 pm and then join the cluster until 05:00 am. Then at 5:00 am, initiate another reboot that will present the Windows Login for the 'normal business day'. This would make great use of the hundreds of computers that are mostly sitting idle during the off hours 'normal business day'. Thoughts, suggestions always appreciated, thanks. Nick In case you need to know, I am likely going to install the BioBrew v3.x which has just been pre-leased in Beta I believe.