querie for deleting private messages by date

[restless]

when i imported my old database, it messed up and only imported certain things. it DID import private messages, but unfortunately... it DIDN'T import my users.

so... i have a bunch of new users signing up, and for each new user, they find a cache of old pm's in their inbox that belong to whoever had their user id# on the old forum. this is going to keep happening right up through our 4000 and something registrations unless i can figure out how to kill them.

is there a mysql querie i can use to delete pms from before a certain date? this is a very sensitive issue, as there are some fairly private pms in there.

basically, i need to delete all private messages from before December 24, 2003.