Here we go.......both the Macs-to-be-replaced, it turns out, are PowerPCs, not Intels.
So they'd both have to be replaced anyway, to run Snow Leopard.
I'm glad that's already been identified!
I'm now working my way through Apple and 3rd party websites to see what software will and will not be ok after the what-looks-inevitable OS upgrade.
Apple themselves say that iWorks08 will be fine.
DeltaGraph themselves say ditto.
Am now checking Filemaker.
It's like a ship (I've just told my boss). If one part does not work, the whole ship will not float.
I've also learned that grey instal disks go with that particular machine; black instal disks (retail) are not machine-specific. Is that right?
