more than likely you are linking to a site that has a cookie on your computer telling the site that you are the owner of those images. so when someone else goes to open them then its not coming up because the arent cookied as the owner.
the links look that way anyway.
use a image program to resize the image to 102400bytes or lower to be able to post them onto your post. there are a lot of programs that you can use. I use a program called ifranview32 from downloads.com works great and is easy to use.
MIke