Pressing shift 2 = quotation mark, not 'at' on American keyboard.

[Donna in Canada]

I've done something stupid. Now when I press
shift 2 I get a quotation mark
shift 3 I get /
shift 6 I get ?

How can I get my regular keyboard symbols back?
Thanking you in advance.
Donna

 

[JoAnn Paules]

Go into the Control Panel and check the keyboard language.