Apologies for tiny pictures

I have just figured out today that you can make the photos you upload different sizes. My apologies for all the little bitty pictures on previous posts. I looked and don't see how you can fix them, except to take them off and then reload them all. I don't want to do that today, maybe another day, or maybe not. I have dialup and it takes a while to upload photos, even when I resize them. Oh well, you can click on them to see a larger version and now I know better.