Modified date on databases (and documents) is in the future - how to change?

Is there a way to change the modified date on documents? My co-worker has a server at his site that has many databases (perhaps 1500) with modified dates in the future because of a time server problem. This is causing many replication issues. I´m looking for a script or tool to change the modified date.

Subject: Modified date on databases (and documents) is in the future - how to change?

Re0signing the Databases from the Admin client should change the modification Time/Date to the current one

That should achieve what you need it to.