join from multiple tables

I have 4 tables: dsclient_logs,backup_sets,dsbox,customer.  I want a
query that will return all rows from dsclient_logs, insert two columns
from the customer table, and one column from backup_sets.  The
relation is this:

dsclient_logs.userid = dsbox.dsbox_snum AND backup_sets.box_id =
dsbox.box_id AND dsbox.account_num = customer.account_num

I originally had this:

SELECT * FROM
(SELECT
dsclient_logs.ev_id,dsclient_logs.type,dsclient_logs.ev_time,dsclient_logs.category,dsclient_logs.error,dsclient_logs.ev_text,dsclient_logs.userid,dsclient_logs.ex_long,dsclient_logs.client_ex_long,dsclient_logs.ex_text,dsclient_logs.timestamp,backup_sets.set_name,customer.company_name,customer.account_num
FROM dsclient_logs,dsbox,backup_sets,customer
WHERE dsclient_logs.userid = dsbox.dsbox_snum AND backup_sets.box_id =
dsbox.box_id AND dsbox.account_num = customer.account_num
ORDER BY dsclient_logs.ev_id desc
LIMIT 101) as a
ORDER BY ev_id

In the end, I want a single row for each ev_id that has the
account_num, company_name, and backup_sets filled in.  I have a
feeling this needs to be done with a different type of join.  Horrible
explanation so I apologize and will gladly redefine my question upon
some feedback.