Shoutbox

Hi, i need to add a button in contact list toolbar that takes me to an URL, can someone give me some information on how to do this please?, Thanks

Edit:
Ok I ve managed to add the button to the Contact list toolbar, but it does not have that Mouseover or Pressed State, instead it shows just the icon (59123), the llink works fine, I dont know how to add those states to the button, this is what i have in my 947 Def

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<urlelem class="CommonLink" Layout=flowlayout(0,2,0,2) Active=MouseandKeyboard|NoSyncFocus Padding=rect(5,4,5,4)

url="http://www.google.com.co">
<Element class="ToolbarIcon" content=rcimg(59123) />
</urlelem>

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And of course the image 59123 i skininfo:

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            <Picture Id="59123">
              <File>Images/googlelink.png</File>
              <Metadata>
                <Colorize>false</Colorize>
              </Metadata>
            </Picture>
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I hope you understand what i want, thanks