I have a parcel point file that is broken into several feature classes based on county. I want to create one north American locator using all parcel data 70m+. Does a locator have the ablity to add multiple reference feature classes? If I tried to merge the data into one feature class it would take weeks and perform very slowly.
Joe is correct, but I would still try merging your features into a single features class in a file geodatabase then making an ArcGIS 10 locator from it. Esri creates locators with this order of magnitude of features in hours.