Regarding question #2: I was told "NO" by NFPA Technical Support after I received my copy. The package which came with the CD says that it is a Single-User program. The new security measure for this program requires an Internet activation and serial number.
I was told the handbook can be installed on two computers, but the NEC version must be in the CD-Rom Drive. You can use a virtual disk program such as Paragon CD emulator and run it from your hard drive.