order by question

Hi folks.

I seem to remember somewhere being shown how to bump specific rows to 
the top of a list; something along the lines of:

select c_id as key, c_des as value from customers order by c_id = 7, 
c_id = 160, value;

however, although the statement is accepted the two rows specified are 
not bumped to the top of the list, but instead appear in their correct 
position in the order by value part.

Is it possible and if so how do I do it?
-- 
Gary Stainburn
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