To get a rough estimate of the size of a single stored procedure, view, or trigger, use:
select(count(*) / 8) +1
from sysprocedures
where id = object_id("procedure_name")
For example, to find the size of the titleid_proc in pubs2:
select(count(*) / 8) +1
from sysprocedures
where id = object_id("titleid_proc")
-----------
3
