HELP!!!!

well last night my stepdad was scewing around on my computer and now every thing is huge and I dont know what to do can sombody help me?

(sorry for such a gay thread but its just pissing me off so much cuz I cant figger it out )

probs your desktop.. right click on desktop, properties, setings tab, screen reso adjust it to the right

thank u so much....

(this can be closed now)