I found another way to do this, but I'm a newbie and not sure I can give it step by step. I just edited my landing page's title (a static home page) to be "named" one space on the space bar. Then it did not show up on the page. In my list of pages it was designated untitled, but I was still able to select it to add it to my menu. I was also still able to designate it as the static front (home) page.
I am not sure if this will have downsides later - if anyone knows, please warn me. I think the main thing would be for me not to have other untitled pages so things don't run amok. URL seems unaffected. Seems much simpler than uploading a white image and all that.
Not sure if it would work for everyone - I am a Vista Firefox user.
You can see if it looks right to you at http://jeannefaulconer.wordpress.com/ . Warning: blog under construction, barely started.
If anyone wants to take a crack at step-by-stepping this so it would be more helpful, be my guests. I struggle with the WordPress lingo & don't have time to do it today.