You don't need a PCI card and you shouldn't need to spend that much.

I own one of those Matrox RTX100 cards and it rocks but prior to owning that I spent £50 (UKP) on a Dazzle Fusion analogue capture device. This connected via firewire (or maybe USB). I used the provided s/w to perform a the captures from that. then simply imported the captured AVIs into Premiere and I was off and running.

Not sure if the Fusion is still available but I quote that as an example.

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