Yes, you can do this by using the green button on the hauppage remote or press Ctrl-G. You then get a mini-guide that allows you to browse your channels showing the name of the current program on that channel. The OK button is then used to switch to the channel on the OSD. You can also enter the channel number directly, but then you won't see the program name.
http://www.gbpvr.com/QuickStart/shortcuts.htm lists the remote and keyboard shortcuts. I don't know how this works with the mouse if that is what you are after (you used the term 'click', so I'm not sure )
Celeron-D 330 2.66 GHz
2 x 256 Mb DDR-400
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