Hi Shelly,
You can change the image size when you upload it to PB.
First, you have to go back and use their old style website.
Click on the green "Upload" button on the top of the page.
On the page "Upload to Photobucket" click on "Customize your upload options"
A pop-up box will show up, "Photo Options"
Select "640 x 480"
Then hit "Save" at the bottom of that page.
Now all of your images you upload will be the normal web page size.
Sea