Editing code in iWeb?

I know absolutely nothing about coding, which sucks. I need to build a website to display my High School sports photos. I am using www.photoshelter.com to host and handle the e-commerce. Photoshelter allows you to customize your site with the galleries and such integrated in your site sao people feel that they are always on your site instead of being sent somewhereelse. I have created a basic little site in iWeb, but the problem is that I need to add the code to one of my pages for the integration, and I don't seem to be able to do that in Iweb. I am too stupid to create my site in any other program, though. IS there any way to edit code in iWeb so that I can just drop in he code supplied by photoshelter?