Creating a primitive miniwindow

I have succeeded so far in creating a "window" in which some important information from the mud appears. However, when I tried to position the window at the bottom, the window prevents me from seeing the text that comes from the mud. I would like to totally "conquer" the area (three or four lines) at the very bottom from the mushclient for my purpose (I would build my own prompt there that would replace the mud's. It ought not to show any scrolling, the text in the window ought to be replaced, not scrolled, when new text from the mud comes - and as formatted by my scripts).

How do I "conquer" the area, ie. have them client write it's output above my window, not under it, where it can't been seen? Any suggestions. I believe I might need a totally separate miniwindow?

Thanks.

Eloge