Beta 0.63 controls configuration question

[VeatFlash 0]

I like many other players have been waiting for this moment - the appearance of beta and now this day has come , I go into the game to enjoy this wonderful moment , I find a weapon , sight , and I see another survivor and is ready to kill him but I understand that I can not aim because my mouse does not have the function of pressing the scroll button (Blodi v8) . and the developers did not provide the possibility of changing the settings , I was very upset and disappointed with the game again . question-how to change the settings ? can as any through documents ? can not  to play the game where you need to kill without using a scope .

p.S. Sorry for my English , not my language.