That is ok for searching and editing data.  However if you enter alot
it is not good.

I found this using google.com

I had problems with the very first part of the function.
Function Find_BeforeUpdate (F As Form)
  Dim RS As Recordset, C As Control
  Set C = Screen.ActiveControl
  Set RS = F.RecordsetClone

I changed it to
Function Find_BeforeUpdate()
  Dim F as Form
  Dim RS As Recordset, C As Control
  Set C = Screen.ActiveControl
  Set RS = F.RecordsetClone

and then it errors on Set RS = F.RecordsetClone

I am at a loss at this time.

Below is the function:

SUMMARY
This article shows you how you can use a single, bound control for both
finding records and for typing data in a form.
You can use this technique to find whether the value typed in a field
already exists in another record. If the value does
exist in another record, the record containing that value is displayed. If
the value does not exist in another record,
you can continue typing data for the current record.
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MORE INFORMATION
Microsoft Access online Help demonstrates how to use the Combo Box Wizard to
find records in your database by selecting a
key value from a list. However, this method is limited in that it is
designed to be used with a control not based on any
table or query (unbound control). The following example demonstrates how to
use a single, bound control to achieve the
same functionality.

NOTE: The field to which the control is bound cannot be a required field,
and it cannot have a validation rule that allows
Null values. Make sure that the field's Required property is set to No, and
that its ValidationRule property does not allow
Null values.

To use a single bound control both for finding records and for typing data
in a form, follow these steps:
1.      Start Microsoft Access and open the sample database Northwind.mdb.
2.      Create a new module with the following declarations and functions:

' *******************************************************
' DECLARATIONS SECTION
' *******************************************************
Option Explicit
Dim Found

Function Find_BeforeUpdate (F As Form)
  Dim RS As Recordset, C As Control
  Set C = Screen.ActiveControl
  Set RS = F.RecordsetClone

  On Error Goto Err_Find_BeforeUpdate

  ' Try to find a record with a matching value.
  Select Case RS.Fields(C.ControlSource).Type
     ' Find using Numeric data type key value?
     Case DB_INTEGER, DB_LONG, DB_CURRENCY, DB_SINGLE, _
     DB_DOUBLE, DB_BYTE
        RS.FindFirst "[" & C.ControlSource & "]=" & C
     ' Find using Date data type key value?
     Case DB_DATE
        RS.FindFirst "[" & C.ControlSource & "]=#" & C & "#"
     ' Find using Text data type key value?
     Case DB_TEXT
        RS.FindFirst "[" & C.ControlSource & "] = """ & C & """"
     Case Else
        MsgBox "ERROR: Invalid data type for '" & C.Name & "'!"
        DoCmd.CancelEvent
        Exit Function
  End Select

  ' If a record is found, save the found record's bookmark.
  If RS.NoMatch Then
     Found = Null
  Else
     Found = RS.Bookmark
  End If

  ' If the record is found...
  ' ...cancel the BeforeUpdate event
  ' ...undo changes made to the current record
  ' ...and TAB to the next control to trigger the OnExit routine.
  If Not IsNull(Found) Then
     DoCmd.CancelEvent
     SendKeys "{ESC 2}{TAB}", False
  End If

  Exit Function

Err_Find_BeforeUpdate:
  MsgBox "ERROR: Err " & Err & ": " & Error$, 48
  DoCmd.CancelEvent
  Exit Function

End Function

Function Find_OnExit ()
  ' If the record is found, cancel the OnExit routine to stay
  ' in the control and go find the record.
  If Not IsNull(Found) And Len(Found) <> 0 Then
     DoCmd.CancelEvent

     ' Synchronize the form record with the found record.
     Screen.ActiveForm.Bookmark = Found

     Found = Null
  End If
End Function

                                       

3.      Open the Customers form in Design view, and then set the properties for
the Customer ID control as follows:
BeforeUpdate: =Find_BeforeUpdate(Form)
OnExit: =Find_OnExit()
4.      View the Customers form in Form view. Click the New Record button at the
bottom of the form. In the CustomerID
control, type AROUT, and then press ENTER.

Note that Microsoft Access finds and displays the Around The Horn customer.
5.      Again, click the New Record button at the bottom of the form. In the
Customer ID control, type POPSI, and then
press ENTER. Because this key value does not exist, you can continue typing
data for the record.
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How the Sample Functions Work
The Find_BeforeUpdate() function uses the FindFirst method to search the
recordset that the form is based on to determine
whether the value typed in the control exists in the table.

If the value does not exist, the global variable Found is set to NULL and
the function exits. If the value does exist, the
global variable Found is set to the bookmark of the found record to be used
by the Find_OnExit() function.

Before the found record can be presented, the BeforeUpdate event must be
canceled, and a SendKeys action must send two ESC
keys to undo changes to the current record.

Next, the SendKeys action sends a TAB key to exit the field. This event
triggers the Find_OnExit() function, which checks
to see if the find was successful. If it was, the CancelEvent action is run
to prevent exiting the control, and then the
form record is synchronized with the found record by setting its bookmark
equal to the bookmark of the found record. Found
is then reset back to NULL.