I have no manual for my copy of dead spa...

Hit "Esc".
"Settings" then "Controls".
Try not to get frustrated. I beat this game with a keyboard and a mouse and it took a while to get used to. Pretty awkward.
Probably the worst controols I've experienced in a PC game.
If you want specifics then post a comment and I'll tell you exactly how to do what as I have it installed on my PC.
For best results, play it in the dark.

There's a forum link here on how to customize your controls, I don't recommend this as there's no telling what may happen with the game.