Hi,
What are you expecting from the PCI shuttleboard exactly..? It sounds like you want the Amiga to see the PCI cards which isn't what the Eagle tower kits did. The PCI slots are just for PC "bridgeboards" (which actually aren't bridgeboards really but just PCs in a slot).
When the Eagles cases were made there was no PCI solution for the Amiga so no drivers or anything.
At least as far as I know! I do wonder what the Eagle board is recognised for though - I know my board isn't (I have the ISA version) - it's completely passive.
On the plus side with a tower like the Eagle one, you can fit a Prometheus, which gives you 4 active PCI slots. I have a Voodoo III and an ethernet card in mine.... when there's working DMA etc I'll hopefully get a TV card in there too....