I can try

I don't have the card, use Debian not Ubuntu, and I don't use the stock kernels either so I can't guarantee success
OTOH I did get a bluetooth USB dongle to talk to my Nokia headset so I've done a bit...

I don't know your experience so say 'obvious' if it is and 'eh' or something if I'm not clear enough.

Open a shell and become root.

Ok - so what kernel do you have?
uname -a
will tell us.

Make sure the hardware is in and then we have a look at what modules are installed:
lsmod

If hci_uart and serial_cs aren't in the list then do:

dmesg | tail -30
to see the last system messages - this is just so later on you can recognises the last line and see if anything is added

then:
modprobe serial_cs
modprobe hci_uart

to probe the modules (ie look for dependencies and then load them etc)

do a
dmesg | tail -30 to see if the system says anything about them

At this point the kernel should know about the hardware - so now we need some user applications to make them do useful things,,,

hciconfig
is a good start