Mac OS X: Boot camp installing Windows XP Home edition from (DELL).?

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I have installed the CD for windows into my MAC computer using boot camp. After the installion I inserted my Leopard disk into the mac and it said you will need to update your computer and I clicked yes. And then it said (Update file is messing) something like that. However, how can I install my files for windows into my mac? do I have to use my mac OS X disks? or the leopard disk? It says, (The file update is MESSING).

Please help me.
why is this error coming up? (The file update is messing)?