Just install... done. Also it's the Business Edition which is the same as the Home Edition (with the advantage of being able to update from unoffical mirrors).
On the About screen it says "License is time unlimited", there is NO License used or required, it's just set to maximum expiry date.
With a personal firewall, antispam, and the same antivirus and antispyware protection delivered by ESET NOD32 Smart Security v6.0.667.0 Business Edition is the most comprehensive defense against Internet threats. These threats come in many forms. In fact, by the time you finish reading this sentence, approximately 70 new variants of malware—viruses, trojans, worms, rootkits, spyware, and more—will have been released. But ESET Smart Security will keep you safe. And with the addition of personal firewall software, you can proactively filter content, ensuring customized protection. ESET Smart Security is a tightly integrated solution designed to protect computers from a range of threats. Built on the award-winning ESET NOD32 Antivirus and its powerful ThreatSense? engine, ESET Smart Security provides antispyware, antispam and customized firewall features to protect you, your family and your business from Internet threats.
NOD32 Smart Security v3.0.667.0 provides:
Proactive Protection: Utilizing ThreatSense—the industry's most advanced heuristics technology, capable of proactively recognizing threats—the window of vulnerability between malware outbreak and signature update is reduced. The included antispam and firewall software provide you with a total security solution.
Precise Detection: ESET accurately identifies known and unknown threats. It consistently wins top awards from testing labs and is recognized for having zero false positives.1
Lightweight Design: Smart Security requires less memory and CPU power, allowing your computer to run fast, making more room for games, web browsing, and emailing.
Fast Scanning Speeds: ESET Smart Security is a highly efficient program ensuring fast file scanning and product updates, while running quietly in the background.