>Hi all,
>
>To be able to prevent unauthorized copying or distribution of program, i want my program to run in the machine which i originally installed. if anyone install or copy to another machine without my consent, program would generate an error message. Anyone can help me with this matter.
>
>MIke


Tie the registration of your software to the computer with the serial number of the hard drive or NIC card or a hash of both. If your software costs more than $1000 dollars consider buying a hardware lock or dongle which is the most secure.