I'm not sure about on windows but every pc has a snapshot ability where you use certain keyboard keys to take a pic of the screen or better still, to take a pic of 'only' the area you want to take.

In Win XP there's an image program which you can use to do this. I can't remember what it's called. But if you have a look around your programs or xtra utility apps you may find it. Save the file as a jpg or GiF & then include it as an Attached file. See below the text box when you post, for the Browse button to find your image.