I am trying to programmatically start a workflow on multiple items simultaneously of a sharepoint 2007 list, I have found code to start workflow programmatically but the issue is, The workflows don't start simultaneously, that is the workflow starts, completes and then only proceeds to start the next workflow.

```
foreach (SPListItem item in collListItems)
{
   item["timerJobInitiated"] = "Yes";
   item.Update();
   SPListItem wrkItem = list.GetItemById(item.ID);
   wrkflowmgr.StartWorkflow(wrkItem , wflassociation,wflassociation.AssociationData);
}

```