Although it worked fine with Windows 7 and paired as per instructions and I could change the sound applet to use it easily. I had to install their personacall software for it to work with Office 2007 Communicator VOIP.It comes with a USB adapter, which isn't needed for normal Bluetooth pairing, but does seem to be required for VOIP. One advantage to using the adapter is that it allows you to pair a single headset concurrently with a cell phone and the laptop. That means that I can use the headset if I walk away from my desk with my cell phone without having to pair it separately with the cell phone, and then back again to the laptop.Given you can have communicator direct calls to your cell phone over the cellphone network, and to your laptop over the VOIP network, this is a big deal...It comes with a small desk adapter/charger which can be powered by USB or 110v outlet. When you place the headset in the adapter it puts it into suspend mode allowing for faster charging, when a call rings and you lift the headset out of the adapter it goes back into active mode and you can answer via a button on the side of the headset. Etc.