Hmm, can you take an SS [Ss = Screen Shot in case you don't know, and assuming that you didn't know that you wouldn't know how to take one so... hit print screen, then paste in an image editor.. like paint then save, then get a website to host your pic... then you can, well go about two ways of postin it clickin img then pasting the link or [imgsrc=www.sdafsdf.com] pretty sure that isn't the accurate version of the html code tho
]
Or maybe you need to update your system??