I have a Dell Latitude Laptop and I am running Windows XP professional and all my icons, windows, fonts, task bar, etc... has zoomed out or shrunk, they are small. How do I bring it back to a normal size?

If this is a new problem try a System Restore to a point prior to the problem:

start > All Programs > Accessories > System Tools > System Restore

Or try: start > Control Panel > Display > Settings > Screen Resolution