My girlfriend found a screenshot of League from a long time ago on her moms computer.

My girlfriend sent me this picture of a game she played a while back, she told me it was one of her best games. After seeing it I didn't know exactly how old it was, so I thought I would see what you guys think and what information you could give me about how old it might be. Oh, also the name of the file is PwnNwbs.png.