You can try to use the GetDeb installer for wiican here if you want, according to the WiiCan project on Launchpad, GetDeb manages the debian packages for that project.
I noticed you mentioned 'wiican' in your question, so I thought I'd help out here.
To use the GetDeb Package and Repository on 12.04:
Use the following instructions:
1: Install the getdeb package.
Or configure the repository manually:
Go to System-Administration-Software Sources, Third-Party Software tab, Add:
deb http://archive.getdeb.net/ubuntu precise-getdeb apps
Add the repository GPG key, open a terminal window and type:
wget -q -O- http://archive.getdeb.net/getdeb-archive.key | sudo apt-key add -
sudo apt-get update in terminal.
3: Click the "Install this now" button below the screenshot of the desired application.
4: If you are using Kubuntu please check bug 476853.
5: If the application cannot be found, run this command and try again:
sudo apt-get update
Then try installing the package you are looking to install (wiican).
If that doesn't work, you may need to google around to find the correct pairing pin for the wiimote. (note that for almost every bluetooth device, a secure pairing pin is used. it prevents malicious access to devices)