1) Copy "accdb" with the file "ContactsDB.accdb" into "C:\" directory
2) Run "PhoneBook.exe"
* This program can have only one instance
* For Ole DB connection problems ( most of them on x64 ) see : http://www.microsoft.com/en-us/download/details.aspx?id=13255
* On x86 and x64 download AccessDatabaseEngine.exe ( 32 bit version ) and install it
http://www.lehavi.com/post/8 - Regular Expression for validation of phone number