Select statement result set to large

Hi 

I am not sure how to pose this question but here goes.

I have a select statement joining tables from two databases where the result set returns matches for every occurrence of the items in the select portion. I am not sure how to write the query to only match for a single occurrence of an id field in one of the tables (like vendid). Any suggestions would be appreciated, thanks.

Query:

Select distinct d.dlr_reference_num,d.dlr_key,a.app_dlr_fkey, CONVERT(VARCHAR(30), a.app_key)AS RapAPP, c.user1, c.vendid from NJACCOUNTING01.marlin_test.dbo.apdoc c inner join dbo.application a 
on CONVERT(VARCHAR(30), a.app_key) = SUBSTRING(c.user1, 1,6) , dbo.dealer d 
where c.DocType = 'VO' and c.Crtd_DateTime > '2012-01-01 00:00:00' and c.VendId like '01%'

Sample result set: