1366 x 768 with GoG's version of BG1

[Guest Bobman]

i installed it and when i play it only shows up in the top left hand corner of the screen

[l1k3m1k3]

I believe in the readme file (or somewhere else), there is information that it is not 100% guaranteed worked if you apply this mod into BG1.

[Jarno Mikkola]

i installed it and when i play it only shows up in the top left hand corner of the screen

Only the game play screen is streched, the menues are not. So start a new game and once you have the game loaded up to the point you can see the character and move them aroud the candlekeep, you'll see the real difference ... or you can use the BG1GUI mod after you install the Widescreen mod with one of these resolutions; 800x600, 1024x600, 1024x768, 1280x768, 1280x800 .

The 1366 x 768 is not supported by that mod.