Sorry but I think I misunderstood the question. You have a pub card not a prism card which is in all p2000's. What gets updated is the rom card. To update the pub card you need the pub update software and a pc with a ISA slot which again is on older pc's. After updating the pub card you then slot it into the p2000 motherboard and let the system do its magic.

I'm guessing you bought a pub card for under $100 as a prism pcb can fetch over $500.