installation - I upgraded to 11.10 but my home partition is missing, how can I recover it?

When I installed Ubuntu 11.04, I created a separate home partition. I have just installed Ubuntu 11.10. In the installation screen The options were:

1. Erase Ubuntu 11.04 and reinstall


2. Upgrade Ubuntu 11.04 to 11.10



3. Erase everything and reinstall


4. Something else

I chose the option called "Erase Ubuntu 11.04 and reinstall".

Now that installation has finished, I have logged in but everything is fresh, my home partition was ignored or not recognized. So Opps... I must have choosen the wrong installation type from the menu - Doh!

Luckily, there is a glimmer of hope because I can see the old home partition in nautilus complete with my old home data and i can see the partition in sudo fdisk -l.

How can I recover my old home partition so that the new 11.10 uses it and everything is back to normal?

Should I re-install but choose a different option? Or is there some command line fu I can use to get me back up and running?