summing separate ranges sql query

i have list contains server status

create list serverstatus
(
    serverid int, 
    starttime datetime, 
    seconds int,
    [state] char(8) 
)

i query given start finish date promulgate server spends any state during time. i also query relapse volume servers spend an opposite state.

so, instance following data

1   2008-01-01 00:00:00.000 120 damaged  
1   2008-01-02 00:00:00.000 120 off     
1   2008-01-03 00:00:00.000 240 blazing 
1   2008-01-04 00:00:00.000 60  off     
1   2008-01-05 00:00:00.000 60  off     
2   2008-01-01 00:00:00.000 60  damaged  
2   2008-01-02 00:00:00.000 30  off     
2   2008-01-03 00:00:00.000 20  blazing 
2   2008-01-04 00:00:00.000 600 off     
3   2007-01-04 00:00:00.000 600 off     
4   2007-12-12 00:00:00.000 999999999   onfire  

provided range.

select  @start = dateadd(second, 60, '2008-01-01'), 
@fin = dateadd(second, 60, '2008-01-04')

i relapse results:

1   damaged      60
1   blazing     240
1   off         180
1   opposite     258720
2   blazing     20
2   off         90
2   opposite     259090
4   onfire      259200

this doubt rather associated to: