Manually run expiration policy jobs

using System;
using System.Collections.Generic;
using System.Text;using System.Diagnostics;
using Microsoft.SharePoint.Administration;
namespace RunExpirationPolicy
{
class Program
{
static void Main(string[] args)
{
foreach (SPService srv in SPFarm.Local.Services)
{
foreach (SPJobDefinition job in srv.JobDefinitions)
{
string jobTitle = job.Title;
if (jobTitle == "Expiration policy")
{
Trace.WriteLine("***************** Start of execution for expiration policy job"); job.Execute(Guid.Empty);
Trace.WriteLine("***************** End of execution for expiration policy job");
}
}
}
}
}}

For more info http://blogs.msdn.com/mattlind/archive/2007/06/05/force-execution-of-expiration-policies-in-moss.aspx