Leo says that while most laptops should have Bluetooth, it's possible that the Pavilion doesn't have it. In fact, the Chatroom says that their DV7s don't have it. There is a switch on the laptop that disables the radios, so it may be that the laptop switch is just disabled.
Go into the device manager and see if it has Bluetooth built in. Here's a technote that may help.
Click Start, and enter "HP Wireless" in the search field. He can also download the .
He could also try getting the Bluetooth Enabler from HP.
Don is also visually impaired, and recommends NVDA screen reader as the best alternative to the more expensive JAWS.