Powerdesk is only needed to configure the TH2Go and get desktop management tools. Your Triplehead is already setup, so it doesn't need any further configuration.
I was confused similarly in XP when I automatically was able to select 4320x900 when I got my triplehead. It was because (at the time) my TH2go has the latest firmware and came with the latest (at the time) software.
_________________ System Core: | Intel Core i5-2500K + ASUS P8Z68-V + 16GB Corsair XMS3 DDR3 1333 MHz | Win7 x64 | MSI R7970 Lightning 3GB [1105/1400] | Display: | 3 x Dell Ultrasharp 3007WFP-HC @ 7680x1600 | Dell u3011 |
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