I'm glad Apple is coming through for you!

I was frankly surprised and dismayed at the results of your first contact with them. That first contact was not what we have come to expect from Apple.
According to MacTracker, MacBook1,1 shipped from the factory with Mac OS X 10.
4.6 not Mac OS X 10.
5.x. So the discs Apple is sending you will be Tiger, not Leopard. Assuming the disc you have is a Leopard disc the only way to install it on a Mac that has Leopard installed would be to do an erase and install which wipes out everything.
By the way, I have absolutely no idea what the dealer meant by a MacBook 2.0GH. There aint no such animal listed by Apple.
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