Newbies who are WRONG.....

Okay, I am a new member! I just registered at imfdb, because I love guns! I'm fairly good with guns and imformation about them and I'd like to learn more! So, I would like to add guns to pages that I see are used in TV shows. but one small problem.... I have not the slightest clue how to get a screen shot! lol I'm sorry if this is a stupid question. If I have something wrong pls tell me. I just made an edit on the TV show Numb3rs. I added the H&K USP, but without a picture. Thanks!

Btw My real name is Ben Tucker!

Thanks again!