Most Broadcom cards all plug in to a PCI or PCI-X slot. What does the
multiport card provide? SATA ports for SATA based drives?????
Here is what Broadcom's web site search returns:
http://websearch.broadcom.com/query.html?qt=multiport&submit.x=0&submit.y=0
Before anyone can guide you, you should indicate what this multiport
card is to provide to your Windows. It is unlikely to add PCI slots
to your PC since PCI slots are usually built onto the motherboard,
which Broadcom does not seem to provide.