g450 dual head millenium matrox display adapter vista

After installing Vista and trying unsucessfully to upgrade the driver to support dual honed monitors, have realized that the driver installation does not recognize the OS (Vista) and aborts the upgrade process. I don't know if the driver upgrade will solve the single monitor display problem I currently have but does anyone out there have any workarounds for this problem?

I got my G450 Dual Head working using the MS supplied driver then installing an updated Power Desk.
Used Software Explorer tool in MS Defender to remove the MS installed Power Desk from startup.
Downloaded an newer XP "SE" driver from Matrox site (not specifically for G450). Same "OS not supported" error on install but the install did extract files to C:\MGAFOLD\XP2k....
From this folder ran PDeskSE.msi to just install the updated Power Desk. Re-boot and was able to use power desk to enable and configure Duel Head capabilities!
-Ron
"Kanuck58" wrote:

After installing Vista and trying unsucessfully to upgrade the driver to support dual honed monitors, have realized that the driver installation does not recognize the OS (Vista) and aborts the upgrade process. I don't know if the driver upgrade will solve the single monitor display problem I currently have but does anyone out there have any workarounds for this problem?