Row Count SQL Syntax

IN the following query i have to get the sum of 3 columnsfrom the case statement(Builders ,Associates ,Affiliates ) in the last column.I tried sum(Productid) but it is multiplying the count by 22,23,24 respectively.
I know i have been posting this again just to get the attention of the gurus.I have come
very close to my results but this is the last hurdle i have to get thru.
Thanks for your help

select
isnull(replace(Ltrim(Rtrim(P.Firstname)),',',''),' ') Firstname
, isnull(replace(Ltrim(Rtrim(P.Lastname)),',',''),'' ) Lastname
, RecordType = isnull(replace(Ltrim(Rtrim(S.Product)),',',''),'')
, case ProductID
WHEN 22 then count(S.Product)
WHEN 23 then 0
WHEN 24 then 0
END AS Builders
, case ProductID
WHEN 23 then count(S.Product)
WHEN 22 then 0
WHEN 24 then 0
END AS Associates
, case ProductID
WHEN 24 then count(S.Product)
WHEN 23 then 0
WHEN 22 then 0
END AS Affiliates
, Total = sum (????)
FROM vwpersons p with (nolock)
join vwSubscriptions S with (nolock)
on S.RecipientID = P.ID
where (
p.firstname in (select Ltrim(Rtrim(H.name)) from externaldata.dbo.Hispanicnames H)
or
P.Lastname in (select Ltrim(Rtrim(H.name)) from externaldata.dbo.Hispanicnames H)
)
andS.ProductID in (22,23,24)
AND S.StatusID in(1,2,3,11,12)
and ((len(p.firstname)>2 or len(p.Lastname)>2))
and ((len(p.Lastname)>2 or len(p.firstname)>2))
group by P.Lastname, S.Product,S.ProductID,S.ProductID,P.Firstname
having count(P.LastName)>=1
order by 2