I did the exact same thing. infact your story follows mine to a T. I purchased the belkin F8T012 and when I got home I installed the drivers and got the wiimote connected. However the whiteboard program wouild tell me no wiimote connected. I tried the blue soleil and it would not detect my dongle.
It wasn't untill I found a site that posted some known working dongles that I found out my perticular one needed an update which was listed on the site. After downloading the update it worked like a champ.
I hope this site helps you as it hellped me.
http://wiibrew.org/index.php?title=List_of_Working_Bluetooth_Devices