mmmhh.... some thing like:
<style>
/* rotacion de texto */
.datagrid-header-row td {
height:40px; /* need to be properly fixed */
-webkit-transform: rotate(-90deg); /* Safari */
-moz-transform: rotate(-90deg); /* Firefox */
-ms-transform: rotate(-90deg); /* IE */
-o-transform: rotate(-90deg); /* Opera */
/* Internet Explorer */
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
}
</style>
but, still needs some work in proper header cells width/height :-)