can't type in search boxes?

hi there,i can't type in any search boxes or emails or on any sights.i can only type in top address toolbar.i tried to system restore and cant type there eather,please help as i have tried every thing i also tried todownload regestry to clean out any problems but i cant type in my email or name so it does'nt work i can do every thing else though with no problems,any help would be appreciated /ps i am at my local libary to be able to type this message