We wouldn't laugh at your noobiness!
You can try save it as JPG to have it smaller. OR!
You can upload it on another image hosting site (e.g.
imageshack) and then use the direct link to the image instead.
If you want you can upload your screenshot on imageshack, give me the link, and I can crop it for you. Cos if you do it in Paint and saving it as JPG will make it lose its quality. I can do it on Photoshop for you if you will tell me which part you want to be cropped.