I moved this to the appropriate forum.
You must have some awfully big images if they are too large for here.
How did you get them on your computer? Many times the software you use will allow editing of the size.
You can upload your images to Photobucket and resize them there, but you will have to follow instructions they provide... we do not have them here. One you get them resized to the maximum allowed here you can upload them here by typing in the URL of the photo from Photobucket in the upload form in the Gallery.
You may even be able to find a free image editing software program at Downloads.com ...
Once you get them sized properly...
here are instructions on getting them into the thread.