You can attach files to posts - and use the inline image mod here to display attched photos in the posts. It's very easy to do.
Are you trying to convert to eve or from eve. Eve is a totally different product. If you go to eve you won't be able to modify any code as infopop maintains all the code for you. But it has a different feature set, so I'm not sure if you can attach photos or not. http://community.infopop.net
would be the place to ask eve questions. Most of us here have never used it.