How To Retrieve The Data From Last Record Of The Query?

I have 2 tables Table_A and Table_B are linked together by TaID

Table_A
TaID - autonumber
Name
Address

Table_B
TbID - autonumber
TaID
Comments

here is my asp page
-------------------------
<%@ Language="VBScript" %>

<!-- #include file="connectionstring.asp" -->

<%
'declare variables
DIM ......

'Assign Variables
.......

Set Conn = Server.CreateObject("ADODB.Connection")

'database connection
Conn.provider = provider
Conn.ConnectionString = dbasepath
Conn.Open

'Sql statement to insert the data
sql = "insert into Table_A ( Name, Address) values (...*data from form*...)

' execute it
Conn.Execute(sql)

Response.Write "Data successfully inserted!"

Conn.Close

Set Conn = Nothing

--------------------------------------------

my question is I also need to insert the data to Table_B, but before that, I want to retrieve the Table_A.TaID first.

so if i do "select TaID from Table_A" and execute the sql how do I assign just the LAST record of TaID and assign to temp variable?

Do I allow to do that? if so, where should I put in the code above?