the answer is '95% yes'.
I have a mixed assortment of stuff (Wavelan cards, Airport equipped
laptops, Airport base stations, Lucent basestations, etc) and they all
play together very well.
Sometimes, in odd circumstances, you have to play hard, particularly if
your using WEP encryption. Different hashing styles of thhe keys and
be annoying. Another example is that if you have a Lucent AP base station
(a corporate level unit), it has 4 'keyslots'. If your using anything other
than keyslot #1, most laptops cant find it cause the laptop drivers dont
uunderstand that they have to use a different slot.
Little stuff like that. Really though, you should be fine. That is the
point of 'WiFi compliance' and 802.11b standards, interoperability.