Forum Is it possible to set up a Cron to auto delete threads
 

Is it possible to set up a Cron to auto delete threads from say "forum 1" after 7 days, forum 2 after 30 daysto delete threads from a specified forum after say 7 days? Or does anyone know of a plugin thats capable of deleting threads from "forum 1" after 7 days, "forum 2" after 30 days, "forum 3" after 90 days etc ??