David Letterman's lawyers are urging officials in New Mexico to drop a bizarre restraining order granted to a woman who claims the US chat show host has been using code words to woo her on his late-night programme.

In a request filed on 15 December (05), COLLEEN NESTLER of Santa Fe, New Mexico, claimed Letterman uses a secret dialogue to express his desire to marry her and train her as a host on his show.

She alleges Letterman has forced her into bankruptcy and caused her "sleep deprivation" and "mental anguish".

Nestler claims the TV personality also employs gestures and "eye expressions" to convey his desires for her.

Legal papers, reveal Nestler began sending Letterman "thoughts of love" in 1993 and that he responded in code words and gestures, asking her to meet him in New York City.

She insists the talk show king even asked her to be his wife,saying, "Marry me, Oprah" on one show - she claims Oprah was one of many code names for her.

The temporary order, which Nestler is seeking to have made permanent, states Letterman must stay at least three yards away from her and not "think of me, and release me from his mental harassment and hammering."

But Letterman's legal team has urged District Judge DANIEL SANCHEZ to overturn the order, claiming it is without merit.

The judge has set a 12 January (06) hearing, where he'll consider granting Nestler a permanent order.

It is not known why Nestler is seeking the restraining order.