Welcome kenq. Thanks for your wishes - you also wish all the best in 2015.
As you can see in the following screen - the contents of rar archive Doupas 6.9.

[Only registered and activated users can see links. ]
It should be unpacked!
Inside is the content - see screen2.

[Only registered and activated users can see links. ]

Proper skin files have the extension .zip - these oliki copy to your phone.
Each file is (of course not unpacking archive) info.ini.
Here's the contents - it determines the supported resolutions.
Spoiler: info.ini Doupas 6.9
[theme]
name="Doupas_v6.9_Silver3D_24"
needs_restart=0
default_night_skin_dir=skin_night
supported_resolutions="1920_1200,1200_1920,1920_1080,1080_1920,1872_1080,1080_1872,1080_1845,1920_1005,1794_1005,1080_1701,1794_1080,1080_1794,1080_1776,1776_1080,1080_1856,1920_1016,1280_800,800_1280,1280_755,800_1235,1280_736,800_1205,1184_718,768_1134,1024_695,768_976,800_1183,800_1216,1280_720,1280_703,800_1172,1280_674,720_1234,720_1280,1280_670,720_1230,1200_670,1180_720,720_1180,720_1134,960_540,540_960,960_502,540_922,960_508,540_928,888_540,540_888,897_540,540_897,540_936,936_540,854_480,480_854,976_552,600_928,791_480,480_791,782_480,480_782,480_762,800_442,480_800,800_480,800_448,480_768,800_435,800_440,480_755,480_760,800_432,480_752,740_440,480_710,1024_552,600_976,768_1184,1196_768,1280_752,800_1232,1280_755,1024_768,768_1024,1024_600,600_1024,1280_750,800_1230,800_444,480_764,800_425,480_745,1184_670,720_1184,1184_720,1196_720,1196_674,720_1138,1280_768,768_1280,768_1230,1280_718,960_552,600_912,960_529,960_527,527_960,600_889,918_540,540_912,960_512,540_932,540_850,888_502,960_503,540_923,960_557,600_917,1280_777,800_1257,1280_775,800_1255,480_320,320_480,480_295,320_455,400_240,240_400,320_240,240_320"



As you can see is the same as in the skin 6.8
Look for the topic of Doupas 6.8 - there information you what and how to customize!
Responding directly:
Of course, this works on the skin of your resolution - it is necessary, however, a slight correction sys.txt - This is a Full HD resolution and set the screen so declared in sys.txt has the answer.


On our forum we wrote about this many times. Just read and follow.
Regards wojpen