Software Deployment

Hi, my name is Nick

and I have implemeted SafeGuard Easy on the network for our laptops.
SGE installas like any other application on a mchine and then it reboots automatcally.
After reboot is done it encrypts entire hard drive, and changes the MBR. It also adds a pre-boot authentication so if that PC is lost or stolen you can't go to boot device list and BIOS settings without proper user ID and pswd.
Anyway, I have MSI on the network which is properly configued.
I created Group Policy and eveything works fine, but only IBM R5x series laptops been having issues.
Blue screen and reinstall by initilizing the Window Installer trying to repair / reinstall that same SGE.
It is not Group Policy or the batch file because I scripted it that way if it is installed to go to end.
I found a possible fix tha tneeds to have some registy changes on the insallation MSI package.
BUT I'm affraid if I change that original MSI on the network, that all of my client machines will try to reinstall / repair tehm self which would be a disaster.
In other words, will the laptops notice that the original MSI was changed and will they then try to reinstall / fix tehat application ?

Any help wpould be greatly appreciated.
Nick [:o]

MSImen