Gracias por tu ayuda arsondpi.
He conseguido poner las miniaturas en la izquierda, pero no puedo mover el slideshow hacia la derecha para que se vean las miniaturas...
Mi pagina es ésta:
linuesa.net/index.php/photo/tiempos-modernos/
Y el código es éste:
#img-container { position: relative; }
.picture { line-height: 0; }
#exhibit #slideshow { margin-bottom: 0; }
#exhibit .captioning { margin: 0.5em 0 1em 0; padding: 0; line-height: 1.2em; }
#exhibit .captioning .caption p { margin-bottom: 0; }
#exhibit #slideshow .captioning .title { margin-bottom: 0; font-size: 11px; }
#exhibit #slideshow .captioning .caption { font-size: 11px; }
#exhibit .placement-top { margin: 0 0; }
#exhibit .placement-bottom { margin: 6px 0 0 0; }
#exhibit .placement-right { margin: 0; }
#exhibit .placement-left { margin: 0; }
#slideshow-wrapper { float:left; padding-bottom: 20px; }
/* #slideshow-nav { position: absolute; bottom: 0; left: 0; z-index: 1; margin: 25px; background: white; } */
#slideshow-nav { margin-bottom: 9px; }
/* #slideshow-nav { font-weight: bold; } */
#slideshow-nav span#total em { font-style: normal }
#textspace p, #textspace blockquote, #textspace code { width: auto; }
#loading { color: #000; position: absolute; z-index: 2000; top: 20px; left: 9px; }
#loading span { background: #fff; padding: 3px; }
#thumbnails { float: left; width:200px; }
#thumbnails a { margin-right: 6px; margin-bottom: 0; margin-top:6px; }
.nav-above { margin-bottom: 6px; }
.nav-below { margin-top: 12px; }
.thumbnails-above { margin-bottom: 6px; }
.thumbnails-below { margin-top: 12px; }
#thumbnails a:active