Quick question: I just reloaded autocad on my system after a HDD crash. I tried to use my previous activation code without success. Apparently, whenyour hardware changes so does the request code. I then e-mailed autodesk for my new activation code, which I'm sure they will promptly send to me. However, I couldn't help thinking "What happens when autodesk goes under?". Certainly my hardware will change over time, I will not be able to use the VERY expensive software that I purchased, not rented!