Mod a lot of warnings occured indicating the size of my image isn’t the right one for the background
You might want to make note of the specific warning messages you get, because that can help us to diagnose your issue.
When you say “background” here, are you referring to the background for the entire site? Or something else?
BTW, because WP uses PHP to generate html on the fly, all your pages are dynamic. (See this for an explanation: http://codex.wordpress.org/Pages#The_Dynamic_Nature_of_WordPress_.22Pages.22)
What exactly do you mean when you say “dynamic”?
