Sorting dataframe

[Thom Burnett <Thom.Burnett@cognigencorp.com>]

How do I sort a data.frame by columns when the direction of sorting 
changes from column to column.
The sort.col() function takes only a single direction.

As an example, I want to take a data frame with columns:
sex, race, smoking, weight

and sort by sex ascending, race descending, smoking descending, then 
weight ascending.
Is there a function available in SPlus 6.2 that does this in a single, 
straightforward step?