Wireless Finger Mouse Lately I Have Been Using An On Screen Keyboard & Wireless Mouse But Now Can't Type On Regular Keyboard, Why?

Lately I have been using an on screen keyboard & wireless mouse but now can't type on regular keyboard, why? - wireless finger mouse

I have an eMachines keyboard and Windows Vista.
PS I "writing" all that comfortable with my Windows Access Center on-screen keyboard, because I can press the keyboard with his fingers on the keys to work. My hand is scary and wrist cramps. Someone, quick, please, help me!