That is what it should show if you are using xp (or you are running vistumbler in xp compatibility mode). The native wifi api is use does not support channel, bssid, and some other things in xp.
If you are using XP,there isn't anything you can do. If you are using a newer version of windows then it is likely that compatibility mode is turned on for Vistumbler.exe and all you need to do is turn it off.