Modules & VBA :: Completing Fields On A Form With Matching Data From Previous Records

I'm trying to make it a little further with my new call answering database at work.

Basically it consists of a main form that has a button leading to a call answering form for each business that we represent. it also has a text box that displays the number of the caller when the telephone picks up, the correct call answering screen is also popped by the telephone software and a macro whenever the phone is answered.

I've got code in place that automatically puts the date and time in the correct field and also copy the incoming telephone number from the main form into the caller number field on the call answering form.

I'd like to take this automation a little further now and get the form to autopopulate the caller details if that caller has called before (we get a lot of calls from the same people) so i'd like to make the form search the table it's linked to for the incoming phone number and to fill in the name, email, company etc... for the caller according to the previous record.

The code for the 2 forms i've currently got setup (the switchboard and one call answering screen) are as follows

Switchboard:-

Code:
Option Compare Database
Dim WithEvents MaxxCom As Metro_MaxxCom_CTI_COM_API.CTI
Private Sub cmd_onnet_Click()
DoCmd.OpenForm FormName:="On_Net_Communications"
End Sub

[Code] .....