Copy contact business fax number to email2 attribute

What I need done: I need a script/program, that will loop through all the mailboxes in an Exchange 2007 server, read the "Business Fax" attribute of all the contacts in every mailbox, change the data according to a rule, and save the new format to the "Email2" attribute of each contact. The "Business Fax" attribute will have values in the following format: [<number>]. The "Email2" attribute should have the value in the following format: <number>@<example.com> I want to be able to change the suffix of the "Email2" Attribute in every run (can be using an ini file, xml file or parameter. The output of the script/program should be in a log file. It should specify if contacts where modified in each mailbox. In case the script/program modified contacts, I want the log file to contain the contact name, business fax and Email2 attributes. Example of Business Fax and modified Email2: Business Fax: [03-1234567] Email2: 03---**-- Specific expertise that I am seeking: If you have experience writing scripts/programs in an environment of Outlook and Exchange server, then it should be quite easy doing what I want. Time frame for delivery: I need to have this up and running within 1 weeks.