Does anyone know of any legacy technologies Vista will not support?

possibles = 802.11b, 16bit sound, ISA etc.

not support wireless b?

you gotta be joking.

here is m/s list for vista;

http://www.microsoft.com/windowsvi [...] pable.mspx

I'm pretty sure almost all legacy products will run fine with Vista simply because a lot of hardware-based products are usually backwards-compatible. That and most OSes (at least from what I've experienced with Windows) support just about everything from the previous generations. Although I do have a question for anyone in this forum, does anyone know which versions with support dual-socket processing systems ie.. dual opertron or dual xeon?

They likely all will... with the possible exception being the lowest-end version... Basic or Standard... whatever the hell they're calling it.

As far as I know, Vista will be chopping out a LOT of legacy code...I guess you'd have to check their HCL as it updates, but I highly doubt things like 16-bit sc's willl work.

With 64-bit beginning to gain momentum and 32-bit already mainstream... it would make absolutely no sense to add 16-bit support.