How To Get The First Row Of A Sorted List

Hi,

I am a newbie so this might be a very basic question. I have a table that not sorted. So I write a query to sort the table like this

Select * from custInfo where custID <> '0' order by custID Desc

Now obviously I have a selection of the original table in desc order. Now I want to get the first custId from thid Desc selection. How do I do this.

So if the unsorted table looked like this

001 Martha
005 Steve
002 Mike
003 David

and the sorted selection looks like this

005 Steve
003 David
002 Mike
001 Martha

And then I want to select Steve's custID which is 005. how do i do this.

Thanks in advance.