Tim,
I finally managed to attach a reasonably-sized photo to a post, but I don't have a clue how or why it worked. I have always tried to do it the way you said -- I take the picture into Photoshop and resize it. But how do I know what the size is in bytes? It shows the image size in both inches and pixels. Somebody told me that you multiply the pixel height times the pixel width and that tells you how many bytes it is. But that can't be right, because when I did that for the picture I just posted, it came to over 430,000.

You said the best way is to take a picture off a website, but I don't have any way of putting a photo on a website. Do I have to get my own website just so I can put pictures on it just so I can put them on the forum? That doesn't make sense.