First you need to apply the product keys. Then you have to proceed with the online or offline activation. You can't use the old activation key as it is based on your old hardware. You need to send us new Hardware Stamp from your system and a new activation file will be generated for you.

For more details about how to activate and DSS V6 please have a look at the following KB article:
http://kb.open-e.com/How-to-activate...oduct_702.html