> So if, for instance, during boot it says:
> ne2: jadda jadda io=0x240something jadda irq=5
>
> How do I get it remaped to io=0x280, irq=9 ?

I had to use a utility disk that came with my card (SMC EtherEZ).  That
allowed me to set and store the configuration on the NVRAM on the card.
It's also possible your card may have jumpers to set these parameters
(especially if it's an older card).