Chop Velveeta into cubes, and put in large pot or crock-pot with enough milk to lightly cover bottom so cheese doesn't stick while melting. Melt Velveeta slowly on a low heat, stirring often to prevent sticking.
Once melted completely, add cheese soup and Ro*Tel.
In another pan, brown ground beef and drain. Add to cheese dip. Mix in chopped green onions and spices. Serve with tortilla chips!