38 Santos Road London SW18 INS 22nd April 1997 Charles Romilly Esq. Director IFX Ltd. America House 2 America Square London EC3N 2LU Dear Charles I acknowledge and agree, in accordance with the Memorandum Agreement dated 12th March 1997, that the...

 
                                                                   Exhibit 10.57

                                00 Xxxxxx Xxxx
                                    Xxxxxx
                                   XX00 INS


22nd April 1997





Xxxxxxx Xxxxxxx Esq.
Director
IFX Ltd.
America House
0 Xxxxxxx Xxxxxx
Xxxxxx XX0X 0XX




Dear Xxxxxxx

I acknowledge and agree, in accordance with the Memorandum Agreement dated 12th
March 1997, that the payment to me, or my designee, of the sum of $162,683.50,
less PAYE tax and the Employer's National Insurance Contribution, and any
advances which have already been made to me, will be in full and final
settlement of all liabilities you may have to me under the Heads of Agreement,
dated 19th July 1997 and the Terms of Employment, dated 13th November 1995, both
of which are now terminated.

Yours sincerely

/s/ Xxxxxx Xxxxxxxxx

Xxxxxx Xxxxxxxxx