[XeTeX] graphics inclusion

[Guy]

Hello,

I'm new to XeTeX and having difficulty including graphics.  I wondered
if anyone could point me in the right direction, documentation-wise.
I used the XeTeXpicfile command (\XeTeXpicfile srikanthacrop.pdf --
where that file is in the same directory as my .tex file) and also the
\box command from the PicFileSample file.  The error I get is:

> ! Unable to load picture or PDF file srikanthacrop.pdf'.
> <to be read again>

Many thanks,

Guy