get a blue tooth dongle they are very cheap and the same size as pen drives. Where i live they cost less that 10 dollars.
Plug it in to your comp install the software and away you go.
if ur computer doesnt have bluetooth already then its best to invest in a bluetooth dongle, i bought mine for about £3 inc. packaging and it works perfectly and it was easy to install.
You will need to get a USB dongle for your computer. It's a stick-like device which you plug into the USB port of your computer. In most cases, you do not need to install anything. Some Bluetooth sticks, however, require a driver. If this is the case, you will find it on the CD which comes with the stick.