Table: tour_down_under_2008
Columns: stage_winner
general_classification
mountains_classification
points_classification
young_rider_classification
team_classification

Question: Name the points classification for mark renshaw and team csc
SQL: SELECT "points_classification" FROM tour_down_under_2008 WHERE "general_classification" = 'Mark Renshaw' AND "team_classification" = 'Team CSC'