Just wrap the image in an anchor tag like you would any other link. For example:
<a href="http://www.sigidi.com/"><img src="http://www.sigidi.com/wp-content/uploads/2010/02/כפתור1-copy-copy.png" width="220"/></a>
thanks – but how can i link it to a page??
to a page in your WP install? They all have permalinks….use the same code, but with the permalink to that page
<a href="http://www.sigidi.com/permalink/goes/here"><img src="http://www.sigidi.com/wp-content/uploads/2010/02/כפתור1-copy-copy.png" width="220"/></a>