Problema separacion entre parrafos explorer

[Ruben_JD]

Prueba con esto:
UL#tabla LI {
CLEAR: left;
WIDTH: 462px;
LIST-STYLE-TYPE: none;
TEXT-ALIGN: center;
margin: 0 0 -2px 0;
BORDER-LEFT: #666666 1px solid;
}

UL#tabla LI SPAN {
BORDER-RIGHT: #666666 1px solid;
PADDING-RIGHT: 1px;
DISPLAY: block;
PADDING-LEFT: 1px;
FLOAT: left;
PADDING-BOTTOM: 1px;
MARGIN: 0 0 0 -1px;
BORDER-LEFT: #666666 1px solid;
WIDTH: 150px;
height: 15px;
PADDING-TOP: 1px;
BORDER-BOTTOM: #666666 1px solid;
}

UL#tabla LI#cabecera STRONG {
BORDER-RIGHT: #666666 1px solid;
PADDING-RIGHT: 1px;
BORDER-TOP: #666666 1px solid;
DISPLAY: block;
PADDING-LEFT: 1px;
FLOAT: left;
PADDING-BOTTOM: 1px;
MARGIN: 0 0 0 -1px;
BORDER-LEFT: #666666 1px solid;
WIDTH: 150px;
PADDING-TOP: 1px;
BORDER-BOTTOM: #666666 1px solid;
}