Your requirements are very unclear. Do you need to get records in relation to single requested id? Then you could use the following:

declare @table table (dt datetime, id int)

insert @table select '2012-09-01 00:00:01.123', 11

insert @table select '2012-09-01 00:01:00.456', 22

insert @table select '2012-09-01 00:01:02.456', 33

insert @table select '2012-08-31 23:59:58.456', 44

declare @reqid int

declare @reqdt datetime

set @reqid = 11

select @reqdt = dt from @table where id = @reqid

select *

from @table

where id != @reqid

and dt > dateadd(SECOND,-61,@reqdt) and dt < dateadd(SECOND,61,@reqdt)

Please provide the case setup as per link at the bottom of my signature. It will give much better idea on what you really want to achieve.