Your problem is not a Cpanel issue. You should contact your webhost (although in reality it problem isn't a problem for them to correct). You should consult the forums of whatever software application you are using for your photo gallery and ask your question there - or if you are authoring a simple HTML site with pictures, you should contact a general web design forum.
Although people many times will help out an end-user, these forums are primarily used by system administrators for troubleshooting problems with Cpanel servers.
You also were extremely vague about what you were using (plain HTML, PHP, a PHP gallery application etc). It sounds like you've got a basic website authoring problem for which you need to contact the appropriate resources.
mike
