Do you have it in your php/html file as img tag, or as css bg?
in the first case you can add the width and height properties to you img tag:
<img src="yourimg.jpg" <strong>height="100" width="100"</strong>></img>
If it is a css background you have to change the size of the div with the width and height properties, but that won’t scale your image.
It is not possible to scale a css background img in css2, in the new css3 there is a background-size property, but css3 is not supported by all browsers.
Maybe you can provite a link to your site so can take a look at the code.
Greetz,
Durgé
Dimics.com