Is there a library or class to create a scheduled task on Vb.net?

You can use Quartz . It is a port of a Java library. I have used it in production in several projects and so far I have done very well. The API is quite friendly too, look at an example that creates a new job to run every day at 6 pm:

    IJobDetail sincronizarJobDetail = JobBuilder
                .Create<SincronizarClasificadoresJob>()
                .WithIdentity(SincronizarKey).Build();
    ITrigger triggerSincronizar = TriggerBuilder.Create()
                .WithDailyTimeIntervalSchedule(
                s =>
                    s.OnEveryDay()
                    .StartingDailyAt(TimeOfDay.HourAndMinuteOfDay(18, 0))
                ).Build();

Jobs only need to implement this interface:

  public interface IJob
  {

    void Execute(IJobExecutionContext context);
  }