css hack for ie

/* tabella corsi */
..tab_corsi{font-size:12px;border:0px}
..tab_corsi td{border:0px}
..tab_corsi td:first-child{background:#444;color:#F06}
..tab_corsi td+td:hover{background:#444;color:white}
..tab_corsi tr:first-child{background:#444;color:#F06}
there are some hacks that make it compatible with ie?