I just uninstalled and reinstall it and it worked, thanks for your help :)

That is an important file, it plays all the dialog in the game.

- Mission Dialogue
- Character Dialogue when in and out vehicles
- Tons of Side-Character Dialogue
- Traffic and Pedestrian Dialogue
- Menu Dialogue

If you don't have a spare, or a way to restore the file back to it's right place, then i'm afraid you're at a halt here with your Hit and Run game, you can uninstall, and reinstall it to get all your files back, but at the cost of your progress. However solutions could be a thing with others if they reply

dialog.rcf is missing

I don't think I can do that, maybe you can give a try of my sound mod

mine server password didn't work

here is a final game mod I have finished the mod
Download

Hi. I gave you a mod at second topic