text overlay on a header banner?

[FamChap]

could somebody provide me with the code that would enable me to float text on the header image --directly over the image.

text that'd reshape with the window's size -- and expands about 80% centered/justified -- and will remain in the same location over the image even when window is adjusted in size.

my forum's current header has a left and right image, with a bg that expands all across to conform to window size, and it would be great if i could have a particular line of text floating over the image at the upper margin.

i would greatly appreciate anybody's input