How can I get product codes for flight simulator 2004

Where Is The Serial?
It should be located on the CD case or may be in your documentation (booklet) that came in the box. You will know it is your serial number because it is a long mix of numbers and letters separated by dashes that seem to make no sense at all, usually 16 characters. Each CD has its own serial number and each buyer will have a different serial number than another buyer.
Install Without Serial
This serial number is necessary to install your software. When installing the software, follow the on screen instructions. There will come a box that asks you for your serial number - this is where you will enter the number - and installation will continue. You can't use the software without installing it with a serial number.
What To Do If You've Lost Your Serial
If you have lost your serial number, you will need to contact customer support services at Empire Earth's company. They will instruct you on how to obtain a new one if possible. You will probably need to have proof of purchase, such as a scan of the UPC code on the box or a copy of your original receipt from the purchase.
More Info
WikiAnswers does not provide serial numbers or for full version retail software. This is a form of piracy if you did not purchase the software and thus do not have a serial number to install the software. It is also illegal to obtain one from the Internet if you legally purchased your software but lost your original serial number (see above for contacting for a new one). It is also a form of piracy to use key generators (keygens) to create a serial number and cracks to bypass the need to use a serial number or to remove the time limit for trials. It is also illegal to download the software on the Internet anyway - except for the Trial versions offered on their site - in which case you still have to purchase a serial number to continue using it. Same for No-CD cracks.