Sir Paul McCartney is taking part in a 24-hour radio marathon celebrating his work - but has warned station bosses that any mention of estranged wife Heather Mills is off limits. Former BEATLE MCCartney will co-host the day-long show on British radio network Classic FM today (07DEC06), but will be hosting a solo two hour slot during which he will play his favourite classical works. The star is also expected to discuss his hometown of Liverpool, England, and self-penned classical work, ECCE COR MEUM, but will not be quizzed on his impending divorce battle from Mills. He says, "I'm fulfilling one of my ambitions to present on radio."