OK, I will try with PX (but I tried PX once, time ago, and as I remember I was getting lags with it). And the second mothod, with all of possible resolution, so you mean it will be working without windowmode? And where should I paste this folder?
EDIT: I tried to copy file with 1920x1200 resolution to the folder with the game, and when I try to open wormkit it minimizes automatically, and I can't maximize it again, seems to doesn't work.
EDIT2: I installed PX, and now it works without lags on 1920x1200, thanks you Steps!
But on 1920x1200 worms seem to be too small, I don't feel comfortable, I tried to change it into 1024x768 and it still works now! But I feel like a little screen lags then (or those are my eyes... because it doesn't effect on game), but if you could say me where can I paste resolution which I'd like to use in game, I would be grateful. I tried to copy 1600x1024 (it's 16x10 as my monitor) to folder with the game, but then I open the game in even smaller window, I don't even see if I can choose this resolution in game from the list, because it's too small to see anything. Sorry for my chaotic english, hope you can understand me