use the 10.5.2 install DVD.

then use single updates with the method outlined by naquaada here and pay attention to the part about Watching your Downloads folder. Then use Single updates available through Apple's Download page and patch them each individually. Then use each update to get your system up to date. Also, make sure your kernel and kexts are current for the version you are installing.

This is supposing the voodoo kernel doesn't work.

If it does, then the voodoo kernel should be installed first then specify the kernel (mach_kernel.voodoo) in your boot flags during updating with apple software update.

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