Hi Mark, try this one:
stLinkCriteria = "[EquipmentID]=" & Me![EquipmentID]
DoCmd.BrowseTo ObjectType:=acBrowseToForm, _
ObjectName:="SubfrmVendors", _
PathToSubformControl:="frmPrimeEquipment.NavigationSubform", _
WhereCondition:=stLinkCriteria, _
Page:="", _
DataMode:=acReadOnly
Just...