You may have moved in too close for the camera to focus on the subject.
Check the minimum focus distance in your manual. I know nothing about the
particular model you are using but if it has a zoom lens go to the longest
setting (ie a 10- 50mm lens you would take out to 50 etc. It may simply not
be possible to get very shallow dof with the camera you are using, in which
case try to put your subject in front of a very plain background like a
cloudless sky.
--
http://www.chapelhillnoir.com
home of The Camera-ist's Manifesto
The Improved Links Pages are at
http://www.chapelhillnoir.com/links/mlinks00.html
A sample chapter from my novel "Haight-Ashbury" is at
http://www.chapelhillnoir.com/writ/hait/hatitl.html
"Simon Harris" <> wrote in message
news:...
> Hmmm....I just tried and ended up with the opposite of what I wanted! 
>
> Background focused, forground subject blurred....I guess this is just down
> to the sample arae that the cam uses to focus???
>
>