Thanks a lot, Vivka, for your corrections! But now I've come to the conclusion that I should use Split in order to extract the two strings I need ('width=###' and 'height=###') from the text here below:

<p class=NonNrPar align=center style='text-align:center;line-height:
normal'><img width=453 height=255 id="Immagine 1"
src="E_DIME_ORIG_file/image001.jpg"></p>

So far I've had no luck with the usual Split procedures.