Relax, it's easy. Go to MAS, Purchases Tab and use option. You can download another installer and save it to as many disks as you like.
The trick is that it downloads to the /Applications folder and once you restart it self-destructs. So if you're going to save the installer you need to do before the restart.
You can also burn it to disc. Kappy has good intructiions for this, search the forums or see this article.
Thank you... I will take your advice and relax...
OK will do.
As you can tell, I totally disagree with apple on this.... It should be a DEFAULT that the ability to make a DVD start up disc is always there... not the other way around.
I have spent hours on this upgrade... upgrading the Snow Leopard, upgrading to Lion, Installing new hardware, re-installing new hardware, re-installing the old hardware...
Some people, like myself, have the ability to DIY, but I don't have the incredible highly detailed inside knowledge that I apparently have to possess...