To change this background 1. Go to CP > Main » Customize design » Editing templates > Photo Albums > Appearance of photo entries And find
Code
<a href="$PHOTO_URL$" title="$PHOTO_NAME$ ($PHOTO_SIZE$, $PHOTO_WEIGHT$Kb)">$PHOTO$</a>
And replace with
Code
<table align="center" border="0" cellspacing="0" cellpadding="0" width="100%" class="infTable"><tr><td class="infTd" width="50%"><div style="text-align:center;margin:0 20px 0 20px;"> <table border="0" cellspacing="0" cellpadding="0" width="140" align="center"><tr><td colspan="3" height="10"><img src="http://web.ucoz.ru/img/ft.gif" border="0"></td></tr><tr><td width="10"><img src="http://web.ucoz.ru/img/fl.gif" border="0"></td><td valign="top" title="$PHOTO_NAME$::$PHOTO_DESCR$" width="120"><a href="$PHOTO_URL$"><img src="$PHOTO_DIRECT_URL$" width="120" height="130" border="0"></a></td><td width="10"><img src="http://web.ucoz.ru/img/fr.gif" border="0"></td></tr><tr><td colspan="3" height="10"><img src="http://web.ucoz.ru/img/fb.gif" border="0"></td></tr></table> <a href="$PHOTO_URL$"><img src="http://web.ucoz.ru/img/003.gif" border="0"></a> </div></td></tr></table>
List of images witch you can replace with yours
http://web.ucoz.ru/img/ft.gif
http://web.ucoz.ru/img/fl.gif
http://web.ucoz.ru/img/fr.gif
http://web.ucoz.ru/img/fb.gif
http://web.ucoz.ru/img/003.gif
Tutorial taken from http://arnis.ucoz.lv/