Nice pics.
Frank - yeah you have to keep the image on your web space provider, if you delete them they wont show up.
The thing i use to resize pics is paint shop pro 7 but theres alot of other graphic software that lets you do it as well, i think you can do it through Mircrosoft Photo Editor if you have it on your pc.
EDIT: Oh by the way, make sure your web space provider supports hotlinking images other wise the pics wont show up.