I turned on my netbook this morning, all fine and dandy until i get to the desktop home screen, it was zoomed in. i tried ctrl and minus but that didnt work then i went online to see what else i could do. i came across a question asking how to zoom out. they went through the whole "ctrl + -" thing also. but then someone said to restore it to the last update date. so i did this about 10 minutes ago and now theres a message appearing on the screen saying:
"The program cant start because urlmon.dll is missing from your computer. try reinstalling the program to fix this problem"
I've tried locating it in the recycling bin but its saying its not there.
All i wanted to do was get the screen right!!!

what do i do? should i bring it back to where i got it and see what they can do? or can any one help?
thank you VERY much in advance
P.S what is a urlmon.dll anyway?