Size it using photoshop, http://www.gimp.org/ , or http://pixlr.com/editor/ . It may be easier to do the following:
This site http://imgur.com/ is very useful for uploading images which may be over a site cap.
Top right click computer, where it says 'upload images'. Once uploaded you will be provided a link. You can upload anonymously or create an account.
Thank you Fenton, i got the picture posted. Kinda zoomed in but it worked.