This is all I found on google. Perhaps a lead?

 

 

http://forums.zonealarm.com/zonelabs/board/message?board.id=inst&message.id=63159

I had a problem with an incompatibility between scrscn and System Mechanic on my D9100. I also thought scrscn was unnecessary, so I deleted it. That was the end of my instalation. Had to reload a complete backup, as nothing else got the system operating. Got rid of the Zone Alarm firewall, but have just installed the latest version and have had no problems. During the period of no ZA, System Mechanic had several updates also. Get rid of ZA before you try the Vista installation again.

 

Dimension 9100, Win XP, 3.0 GHz P4, 2 GB DDR2 533 MHz RAM, 160 GB SATA II Samsung, 300 GB SATA II Seagate, 250 GB SimpleTech USB (WD Drive), Nvidia Go 6800 (425/825 MHz), Dell 1901 FP UltraSharp

Inspiron E1705, Win Vista Premium, T7200 Core 2 Duo (4MB, 2.0 GHz 667MHz), 2 GB DDR2 677 MHz RAM, 2 GB Transcend 150X SD ReadyBoost, 120 GB Samsung HD, Nvidia Go 7900 GS, 17” Sharp UltraSharp TrueLife Wide-Screen WUXGA