I tried to install an old release of FreeBSD (4.4) yesterday and the OS didn't recognize the NICs. My mac pro has two NICs and a more current release of FreeBSD (8.2) sees them as: em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.3> This driver was not available in FreeBSD 4.4 so I had no network. I tried using: Default Adapter Ethernet 2 vnic0 But 4.4 didn't recognize any of them. I ended up using VirtualBox to solve this problem. It allows you to emulate various NICs instead of giving you no choices. VirtualBox offers: PCnet-PCI II, PCnet-FAST III, as well as several Intel PRO (gigabit) NICs. The PCnet-PCI II worked for me (and FreeBSD 4.4). Has anyone else solved an issue such as this with an older OS with no drivers for the newer mac hardware? Will Parallels ever offer older hardware emulation?