Paula, it's on at 9 Eastern/8 Central. You can see everyone's performances on rockstar.msn.com. Click "vote," roll your mouse over their faces to get the pop-up menu and then watch. I normally use Mozilla, but Explorer works better for me on that site. They also have the reality clips posted, all the stuff that goes on at the mansion. About 20 minutes worth for each week.
They keep all the performances up throughout the season too.