You can get a USB bud
http://www.tigerdirect.com/applications/category/category_slc.asp?CatId=909&srkey=bluetooth%20usb
I have the IOGear one, not much range though, 20 feet tops.
Bluetooth really only specs out to 8 or 10 feet I think.
I got it so I can use my Bluetooth Mouse and Headset and only loose one USB port, although this laptop has 4 USB ports (One doubles with eSATA) so it's not a big issue.
I'd think there are better wireless headsets then a bluetooth if you want more range.