Cant remember how too run in cod 4 pc

[Zooropa]

Ive had this game since day 1 but havent played it for yonks,been on today for a shoot about and cant remember how too run,i swear i used to double tap the w button but that dont work and cant see in the controls option what it is..........

 

[Zooropa]

Found it :banana::banana:You have too press E while pressing W