How can i change to images the menu?

hello!!! i would like to add images to the THB menu.. how can i ??? plz

As far as I understand, you can not add images in web.sitemap...
You can try changing in template.master file to insert images
like this

<div id="headermenu">
  <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" StartingNodeOffset ="0" />

  <asp:Menu ID="mnuHeader" runat="server" Orientation ="Horizontal" MaximumDynamicDisplayLevels ="0" SkipLinkText ="" StaticDisplayLevels="2">
    <Items>
       <asp:MenuItem ImageUrl="~/images/ArrowR.gif" Selected="true" NavigateUrl="~/Default.aspx" />
       <asp:MenuItem ImageUrl="~/images/ArrowR.gif" Selected="true" NavigateUrl="~/Default.aspx" />
     </Items>
  </asp:Menu>
</div>

rav