Okay, I bought Act 2007 on E-bay and the disc got damaged in transit. I have the serial number, but no way to load the software on my computer. I called Sage and they are going to charge me $40 for a replacement disc, but that is more than what I paid for the program on E-bay. I have a friend who has Act 2007. Can I use his disc and my serial number? Any other suggestions?