The only way I found to check ink level status is this:
1) Print something to the i320
2) When it starts to print you will see a blue information icon show up in the system tray
3) Click or double click on it
4) You will now see the status of your ink levels and what is being printed
I wish Canon made the software so you can check the ink levels in the printer properties (software only allows you to reset the ink timer). I believe both Epson and HP printer software allows you to see the ink levels in the printer properties.