Can someone please answer this???How do i change the screen size of my computer? the screen size is only small?

i have tried screen resolution, it didnt work. the problem is with bebo, the size of the screen is tiny, i have contacted them, they said it had something to do with my computer. it happened the other day.i think it was because i pressed some button on the keyboard.Can someone please answer this???How do i change the screen size of my computer? the screen size is only small?
if the letters on a web page are to small and you're using internet explorer or firefox web browsers press and hold down the crtl key then press the + (plus) key to enlarge the letters or press the - (minus) key to reduce the size of the writingCan someone please answer this???How do i change the screen size of my computer? the screen size is only small?
Have your browser open (Internet explorer, Firefox.. whatever) on the bebo page. Hold down the Ctrl button and scroll up with the scroll wheel on your mouse (or scroll thing on your touchpad if you aren't using a mouse.
If you have tried the resolutions the check with the buttons on the monitor if that also doesn't help and if u have a graphic card installed then check the settings in it.If you have a graphic card and the problem is not because of any hardware then it can only be fixed by restoring defaults or changing a few settings.If u find difficulties in the process then contact me.
First,go to contral panel than go to settings and go to screen size and pull it all the way to the right.