Native res problem, displaying off-limits

Hello every one out there, i'm here in fact seeking some help.

If this info is needed:
System:
CPU:Intel Core 2 Quad 9550
MoBo: Asus Striker II Formula (780i SLI)
Ram: 4GB
GPU: (Single) EVGA nVidia GTX 280
OS: XP 32-Bit

Single
Display: Panasonic Plasma HDTV 1280x720 pixels (the number of pixels it ACTUALLY has)

Now here is the problem...

I've been using this HDTV as my monitor for quite a while, in the beginning i just had to do some settings (as it is always expected when building a new rig) and everything ran fine, i made the thing display using the native res (1280x720) and it worked fine, es expected.

But then i decided to update the driver recently, due to some evga precision problems (system crashing when "overclocking" using it), and i read it would be useful if i updated the drivers so i could run the overclocking wihout crashing.

So then i did it the proper way: uninstalling via Device Manager, then i booted safe mode to run Driver Sweeper, clean ALL of the detected things and then installing the new driver and booting again in normal mode so i could finally use my new driver

Now here it is:
I ran nVidia Control Panel and select MY native res (as i used it before with the original driver), which is, again; 1280x720, and as son as i apply the changes the image goes off-screen, well it displays off-screen so i get just the center of my desktop, without being able to click on start button or any of the active windows collapsed at the taskbar, and i cant see my whole desktop!!. Why then, was i able to do it with an OLD driver, the factory one!?
I also tried, and resized it, but as soon as i apply the Resize it returns me to the crappy res of 1200x676
What could i do to solve this problem? I tried everything that i can, even looked for solutions in nView and am unsuccessfull of course.
HELP needed!