Hi!
Hm... I don't understand it... I visited your forum and looked at your configuration files, everything seems OK for me. But one thing: why did you define an own admin.css?
In templates/subSilver/admin/page_header.tpl change the line
<link rel="stylesheet" href="../templates/subSilver/admin.css" type="text/css">
into
<link rel="stylesheet" href="../templates/subSilver/subSilver.css" type="text/css">
I do not have two css files...
Additionally you have some errors in the subSilver.css:
a.postlink:visited { text-decoration: underline; color : #AFAEAFE; }
#AFAEAFE is not a valid color.
td.row3 { background-color: #OC1726; }
You typed an "O" instead of "0".
Regards,
Bálint