Had a buddy of mine wanting to edit videos on his PC so pointed him in the direction of this bargain I found. He picked it up for £3.60 in store (same price online) and then slammed it straight in!
3 Ports on the face of the card and 1 for connecting to a front-of-case port
Has additional molex connector for more juice if you have multiple Firewire devices connected up.
Their site description leaves a lot the the imagination.
Cheapest i can find is Scan at £7.01 inc VAT