USERGB.PHP
Find:

Quote:<td class=\"thead\"><strong>New Comment</strong></td>

Replace:

Quote:<td class=\"thead\"><strong>Nuevo comentario</strong></td>

Find:

Quote:<title>{\$mybb->settings[\'bbname\']} - New Guest Book Comment</title>

Replace:

Quote:<title>{\$mybb->settings[\'bbname\']} - Nuevo comentario</title>

---------------------

Find:

Quote:<td class=\"thead\" colspan=\"$cells\"><strong>Guest Book For: {$memprofile['username']}</strong></td></tr>";

Replace:

Quote:<td class=\"thead\" colspan=\"$cells\"><strong>Libro de visitas de: {$memprofile['username']}</strong></td></tr>";

Find:

Quote:td class=\"trow1\">Posted By:<a href='member.php?action=profile&uid=$post[posterdid]'>$poster</a></td>

Replace:

Quote:td class=\"trow1\">Escrito por:<a href='member.php?action=profile&uid=$post[posterdid]'>$poster</a></td>

Find:

Quote:$html.="<tr><td colspan='$cells' class=\"trow1\"><a href='gb.php?act=view&uid=$uid'>View All</a></td></tr>";

Replace:

Quote:$html.="<tr><td colspan='$cells' class=\"trow1\"><a href='gb.php?act=view&uid=$uid'>Ver todos los comentarios</a></td></tr>";

-------
Find:

Quote:$html.="<tr><td colspan='$cells' class=\"trow1\"><a href='gb.php?act=new&uid=$uid'>New Entry</a></td></tr>";

Replace:

Quote:$html.="<tr><td colspan='$cells' class=\"trow1\"><a href='gb.php?act=new&uid=$uid'>Nuevo comentario</a></td></tr>";

P.D: This is a free work maked with love for mybb lovers.
If anyone is kind and wishes to Donate me some MyBux.
I will Really appreciate it, beacuse i need them to continue my translate work

Esta bien la traduccion
gracias