Follow this procedure for Estate-a-Base only. From the top menu bar, select Go To > Open Letterhead Master Document > Proceed. Paste the letterhead into this document below Update (if it appears) but above the date. Letterhead for the Statement of Account can be added directly to the master statemnt.acc. For the ledger, the required file is ledger.fmt.
The letterhead file that should be modified is ltr&date.fmt, which contains a code to add in the date. There is also an account letterhead called statemnt.acc.