I pretty sure it can't be done but it's always worth asking around here. Can a dual screen set up be done with a Widescreen and a standard monitor ? I'm using a Matrox milennium G550 and it dosen't seem to like it.
I have a widescreen and a standard-aspect ratio monitor working nicely on my setup, so it does work, but I can't comment on your video card. Windows Vista Premium Intel Core 2 Duo E6600 (no OC) BFG GeForce 8800 GTX OC Corsair XMS2 TWIN2X2048-6400 2X1GB DDR2-800 Western Digital 150GB Raptor x2 Sound Blaster X-Fi XtremeGamer Fatal1ty Pro Series Dell E207WFP & Samsung SyncMaster 213T Asus Striker Extreme Motherboard PC Power & Cooling Turbo-Cool 1KW-SR Silverstone Temjin TJ07 with window Pioneer DVR-212D DVD/CD Writer APC Back-UPS XS 1000 Various trick lighting & mods