Hi, Was interested to know where DipTrace is actually based, couldn't find the information on their website. I have the 500 pin student version. I sent them an email from my university email account to ask what info they would require for me to prove I was a student and they responded a couple of hours later with the key! I actually missed the email coming in because I thought it would take a day or so. I'm guessing they are in central Europe because I received their reply at 7:50 PM NZDT which would be about 9 AM in Eastern Europe. Of course they may be USA based and just open 24 hours a day. Cheers, Chris