Comet McNaught has brightened this week to the point it is readily observable, even in large cities! If you are living at northern latitutes and have a clear southwestern sky you can try to watch it, it might be a very nice sight. Depending on your latitude you can watch it up to the friday or saturday.
The comet should be very low, close to the horizon, at 15-20 degrees from Venus (depending of your latitude). For more detailed instructions go to SkyTonight.com site, they also have a nice photo gallery.