When you are signed into GMail, select the more link at the top of the page to find the Photo section of your account.
When the Picasa Web Album page loads, select the upload button.
In the pop-up window, select create new album.
After you have filled out the information for the album, at the bottom , select unlisted for the share status. That will allow people to se it, but not discover it. Only those people that click the link will have access.
After creating the album, on the right hand side, you’ll find information about the album. Part of this will include a link to share the album.
After clicking it, you will see a URL, which is what you need to make the link from the website to the album.
After that, all you will have to do is upload the photos to the album and they will be visible. As long as your pictures are not super high quality, this should be more than enough space. It also is easy to rotate some pictures out and others in as needed.