Possible Duplicate:
Which new Mac purchasers get free upgrades to 10.7?
I'm due for a free update to Mac OS X Lion, as I bought an iMac in July after the cut-off date for free updates.
When I go to claim the free update on the apple web site, it asks me to enter the serial numbers of all "qualifying macs". If I just enter the number of the Mac that I bought most recently, will I be able to install Lion on the other ones manually? I assume so, but I don't want to accidentally short myself $30 :)