General :: Populating Data Between Tables

I have an Access 2007 database with two tables (I will call them table 1 and table 2)

Both tables contain the same two fields. (I will call the FirstName and LastName)

Table 1 has an associated Form where the user enters the two names. When the value in either one of the two fields in Table 1 change I want the corresponding field in Table 2 to automatically update with the same value that were entered in Table 1. Basically I want Table 2 to automatically replicate the same data in Table 1. So if I type the text "John" into the FirstName field in Table 1 then the FirstName field in Table 2 will automatically update with the text "John"

I am new to access and am struggling with the automatic updating.

If the automatic part is too hard then I will be happy to attach the update action to a command button.

I have uploaded my database file with the two tables for reference. I want to get the fields (for all records) in table 2 to replicate table 1 so that when table 1 updates table 2 values changes to show the same text.