Modding 1.1: Buttons

Hey all. I seem to have an issue, of which i do not know a fix too. I'm working on a mod for Blockland, its based off 1.1 (I think), and doesn't include GuiBitmapButton, so i'm wondering if through profiles, i can add in a think such as demoWindow.png for buttons?

If not i gues si'll have to jerry rig it, and use a GuiBitmapControl + GuiMouseEventCtrl