I was able to figure it out.
SELECT Tbl1.Ts, Tbl1.Max AS Skin1Max, Tbl2.Max AS Skin2Max, Tbl2.Max+Tbl1.Max as SkinSum
FROM
(SELECT ts,max,sum FROM aggregates WHERE name = '3B-HP-DRM-SKIN-1-T' AND ts between '14-JUN-06 07:32' AND '14-JUN-06 22:26') Tbl1
INNER JOIN
(SELECT ts,max,sum FROM...