hyperlinkcolumn tooltip

Question

I've got a hyperlink column in a datagrid that looks like this:

<asp:HyperLinkColumn Text="&lt;IMG src=&quot;image/buddy.gif&quot; border=0&gt;" DataNavigateUrlField="Personalnummer" DataNavigateUrlFormatString="Verwaltung_NeuerMitarbeiter.aspx?Mitarbeiter={0}">
<HeaderStyle Width="40px"></HeaderStyle>
<ItemStyle HorizontalAlign="Center"></ItemStyle>
 </asp:HyperLinkColumn>

Is there a way that I can have it display a tooltip when the user hovers the
mouse over it?

Thanks U very much ...