Multicast Over Old Wavelan Bridge?

El Precioso asks: "I'm working on a university where the campus is distributed throughout the city. Every building is connected through 2Mbps Wavelan. The antennas are connected to an old Lucent equipment (blue boxes) which have a ISA wavelan card. These things work terribly but it's all we can afford now. Recently I've been asked to get Multicast running through these things and I wonder if anyone has done anything similar and how? BTW: There is one central point with a omnidirectional antenna. Thanks."