How do i change my screen resolution?

How can I change the screen resolution (Windows XP)?

• I have just messed about with the screen resolution on my computer, attempting to set it to a higher resolution than my monitor can actually handle on Windows XP. Now my monitor is very fuzzy/blurry. Too blurry to see anything (literally anything). I'm using a very old fashioned Compaq SVGA monitor. I can't do the usual right click, personalise, settings thing because I can't see anything. I restarted my computer and now I'm stuck on the welcome screen because I can't see anything. Is there any way to adjust the screen resolution from the boot menu or something? I can see the boot menu clearly, it just goes fuzzy when it goes on the welcome screen. Before anyone asks "how are you asking this if you can't see anything?" I'm using a different computer. Any help is appreciated. Thank you :)

• Answer:

  Not sure if this would help. But my monitor has a menu button that once pressed shows a menu to increase/reduce, brilliance/contrast, width, height, and a number of screen size formats that you can select. Does yours? Within XP there is a safety setting that you can select which runs the screen in 256 colours, using that might stabilise your screen and enable you to see the questions to be able to answer them. Finally, these is in XP a tool which will let you go back to settings operating at an earlier date, select the most recent, and it should put your setting back to where they were when you knew the system operated OK.