I see in your background that you are using XP. Depending on your video card, you may be able to do this. Right click on the Desktop, somewhere with nothing in the area. Then choose Properties in the popup menu. Then click on Settings tab. Then on Advanced. Then on Adapter type. That should tell you what the video card is. Then click on the tab that has the name of the video card you just found. The process is started there. If you do not know how to go from there, post back with the video card info for further help. You will need the proper cable, ETC in order to proceed also.
what is needed to use my 30" TV and not my monitor as my pc's monitor??