I don't know much about HTML, though I use Front Page....try the following:
Click on your open page > properties > choose the tab 'advance' > in the
middle of this tab information is a button called 'Body Style' .. click this
..., down the bottom of the next page shown is a button not highlighted called
'format' with 2 little arrows, click and select 'border', this opens 'borders
and shadings', click the tab at the top being 'shading'. at the bottom is an
option 'background pictures', using browes choose your picture (it may
already be showing if you have chosen else where', then you will se a button
under this titled 'repeat', using the down arrow, select your option, then
the button underneath titled 'attachment' choose your option here also
(usually scroll) you want your words to move with you picture, not up and
over the top of it, then click okay, okay.....all the way home..
Hope this works for you
Chez....I've just used this, but my back ground is loading slow, I need to
figure a way to change my pictures size and work effectively...
good luck