How To Calculate Fields In 2 Tables In VBA

I have 2 tables - Customer and Carrier.

Each table has 3 headers (fields). Address, Latitude and Longitude.

I would like to know, how I take the value of the field (i.e Latitude) in each table for my calculation?

In Excel, I can specify the column (i.e Range("B" & x) - where 'x' is the row number)...but how do I do it in Access.

Code:
Dim db As DAO.Database
Dim rsCustomer As DAO.Recordset
Dim rsCarrier As DAO.Recordset

Set db = CurrentDb
Set rsCustomer = db.OpenRecordset("Customer")
Set rsCarrier = db.OpenRecordset("Carrier")

[Code] .....