If personal use ah? yurs original or pirated? 
If pirated version, should able to install in many computers.. But
not in same computer twice after it expires..
If original version, as I said so, depends on how many users u
bought for.. if only 1 user, den u can only install in 1 computer..
most likely the rest of the computer sharing the same CD key can't
use liveupdate...
