Help with updating images on a html page?

hey all i’m updating my html pages through my flash website and backend but there is one problem with it when i go to the html pages i have editited the text and that changes but absolutely none of my images or styles bg colours etc…won’t show up just white with plain text is what i get…

Also is updating or adding a graphic to html from php the same principal as text??

a little guidance? or direction?

Cheers Peeps