Many 64-bit cards will also work in 32-bit slot.
Oh, one thing I forgot to tell you. Since there will be part of the connector (that extra lines needed for 64-bit operation) "hanging" above the motherboard when you plug 64-bit card into 32-bit slot, check that there's room for it (vertically). I've seen motherboards where it was not possible to plug 64-bit card simply because various connectors, capacitors, chips in high sockets, or whatever were blocking that space. There must be some free space (aprox 1 3/4" in length) in front of the connector. Low-height chips are OK, they will leave enough space for the card's 64-bit part of the connector. Anything higher, and you won't be able to insert the card. Most recent motherboards are designed with this in mind, and have no obstructive elements in front of PCI slots (only low height chips, which are OK), or such elements are aligned with in-between-slots space. Some older and/or poorly designed motherboards might have capacitors, connectors or other junk exactly alligned and just infront of the PCI slot(s). Actually, I saw one rather recent Intel mobo with exactly that problem (some stupid diod that could have easilly be placed a bit to the side, making one of the PCI slots unusable for 64bit cards, sigh).
-- Aleksandar Milivojevic <amilivojevic@xxxxxx> Pollard Banknote Limited Systems Administrator 1499 Buffalo Place Tel: (204) 474-2323 ext 276 Winnipeg, MB R3T 1L7
