you can add it to the following line:
" <td valign=""top"" width=""50%""><a href=""http://www.gaia-instituttet.dk"" tabindex=""-1"">" & getCurrentIcon(strTitleImage & "||","GAIA-Instituttets hjemmeside","") & "</a></td>" & vbNewLine & _
try changing that whole line to this:
" <td valign=""top"" width=""50%""><a href=""http://www.gaia-instituttet.dk"" tabindex=""-1"">" & getCurrentIcon(strTitleImage & "||","GAIA-Instituttets hjemmeside","") & "</a><br /><a href=""http://www.gaia-instituttet.dk/gaia/nyhedsbrev.html"" target=""_blank"">Tilmelding til GAIA-Instituttets nyhedsbrev</a></td>" & vbNewLine & _