Depends whos hosting the image. If you are posting it as an attachment, the max size for a JPEG is 293.0 KB. If you are linking to a screenshot at photobucket for example, you can set whatever size you like. Do bear in mind that large images are a real pain for people on dial up. I try to keep mine to around 1000x800ish. One large image on its own wont really be a problem but if you post 10 large images at once, you might be asked to reduce them. Post the shots as an attachment and then you cant go wrong
