The adapters are only 1 part of the teaming equation, you also need a switch that will support this. If you don't have both, the adapters are useless. With intel cards, the OS sees a new adapter along with the older one. You can configure certain VLANS to be sent out the bound interface and still use the original configurations for other traffic.
There is also all sorts of teaming options, you can have:
1. Adaptive Fault Tolerance = If one adapter fails, the second, or third or whatever picks up the traffic, you don't get bandwidth aggregation
2. Adaptive Load Balancing = Just what it sounds like, traffic is shared between the interfaces
3. 802.3ad Static = All trunks are defined by a specific set of ports, if the switch supports it, the ports are bound together
3. 802.3ad Dynamic = Hey, this port supports this, add it to the trunk automatically
You will also need to setup your switch, that's dependant on the manufacturer.
At this location we use 1 Intel Pro 1000XT and 1 1000MT Dual Port for our server
At another location I use 1 1000MT (PCI-X) Dual port for public traffic and 1 1000MT for server only traffic