gta4

so yeah i have downloaded gta4 and i have some technical problems, such as bad shadows etc. on the web i saw some commands u can add to the game in order to help u having better frame rate, textures etc.
does anyone have problems with that game?
i am trying to add commands like -windowed -texturequality=2 -renderquality=4 -detailquality=99 -viewdistance=99 -width=1400 -height=900 on the gtalauncher but nothing different happens, also they recommended to make a new file on the main gta folder and named it "commandline.tx" and put the commands inside but nothing happens as well..
just look at this!

does anyone have problems with that game?
i am trying to add commands like -windowed -texturequality=2 -renderquality=4 -detailquality=99 -viewdistance=99 -width=1400 -height=900 on the gtalauncher but nothing different happens, also they recommended to make a new file on the main gta folder and named it "commandline.tx" and put the commands inside but nothing happens as well..
just look at this!
