Query Help: Need To Return 2nd From Top Record

i need to retrieve the most recent timestamped records with unique
names (see working query below)

what i'm having trouble with is returning the next-most-recent records
(records w/ id 1 and 3 in this example)

i also need to return the 3rd most recent, 4th, 5th and 6th most recent
- i figure if i can get the 2nd working, 3rd, 4th, etc will be cake

thanks,
brett

-- create and populate table
drop table atest
create table atest(id int not null, name char(10), value char(10),
timestamp datetime)

insert into atest values (1,'a','2','1/1/2003')
insert into atest values (2,'a','1','1/1/2004')
insert into atest values (3,'b','2','1/1/2003')
insert into atest values (4,'b','3','1/1/2002')
insert into atest values (5,'b','1','1/1/2004')

-- select most recent records with distinct "name"s
select a.* from atest as a
where a.id = (select top 1 b.id from atest as b
where b.name = a.name
order by timestamp desc )

/*
query results for above query (works like a charm)
2a 1 2004-01-01 00:00:00.000
5b 1 2004-01-01 00:00:00.000
*/