How to do this ?

[Axel R.]

Hi all,
I would like doing something like this : http://axel584.free.fr/table6.gif
Whith Ph0t0sh0p, I do a blur on the shape (or the text) and I put the 
image/mode to bitmap (with corrects arguments)
But I didn't found this on the gimp.
Who can help me ?

Thank's

Axel R.