Всетаки получилось самому, что хотелось:
Dim pID As New UID<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
Dim pApp As IApplication
Dim pEditor As IEditor
Dim pEnumFeature As IEnumFeature
pID = "esriCore.Editor"
Set pApp = Application
Set pEditor = pApp.FindExtensionByCLSID(pID)
Set pEnumFeature = pEditor.EditSelection
pEnumFeature.Reset
Dim myFEATURE As Ifeature
Set myFEATURE = pEnumFeature.Next
j = myFEATURE.Fields.FindField("PODVID")
myFEATURE.Value(j) = podvid