It is good to see that article Sergey's poit to.
But for your needs try:

** In ListBox Properties
RowSourceType = 3 && SQL-Statement
RowSource = "SELECT Workshops.WorkshopName,WorkshopId FROM Workshops INTO CURSOR crsWorkshops"
BoundTo = .t.       && seems to be the only way to set it with int values
BoundColumn = 2

But keep in mind that if somhere else you changed the records in Workshops table (DELETE, UPDATE or INSERT) these changes will not affect the ListBox Itmes. You must issue:

thisform.Grid.ColumnX.ListBox.Requery() to make changes available.