sorting intenal table - first field Asc and second field with dece order?

Hi,

How to sort intenal table with 2 fields? One is Asending orider and the other field in Descending order?

EX,

field1(account no ) - field 2(date)

1004 - 2005/01/01

1004- 2007/01/01

1003- 20005/05/05

I want to sort this in this way

1003- 20005/05/05

1004- 2007/01/01

1004 - 2005/01/01

can any one help me.. thanks for ur time.

Rajesh