Amigo, intenta con este codigo, me comentas si te funciono....
Código HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Documento sin título</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>
<script type="text/javascript" language="javascript">
$(document).ready(function(){
$('.check').live('click', function(){
// .attr('checked')
if($(this).is(':checked')){
alert('Check Seleccionado '+this.value);
}
})
})
</script>
</head>
<body>
<table width="200" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="31"> </td>
<td width="169"><strong>Nombres</strong></td>
</tr>
<tr>
<td><input type="checkbox" name="nombre" class="check" value="1" /></td>
<td>Antony</td>
</tr>
<tr>
<td><input type="checkbox" name="nombre" class="check" value="2" /></td>
<td>Carolina</td>
</tr>
<tr>
<td><input type="checkbox" name="nombre" class="check" value="3" /></td>
<td>Marisol</td>
</tr>
</table>
</body>
</html> 