I finally managed to get all my stars turned into Wii points... It has taken me a couple of weeks of checking the website at 1am but yesterday I used my last 400 stars.
Stars (for you none European users) are like a clubcard type scheme that has been running on Nintendo-Europe for a while now, with each game or console you buy you get a code that gets you a number of stars for your Club-Nintendo account, but only recently has there been anything decent to buy, those being Wii points
total number of stars converted: 2400
Wii points: 600
I started checking occasionally in early January, and once found the largest of cards available, but as I didn't have enough stars (4000 needed) I could not get it.
finally on the 14th of January I found there were some 100 Wii points cards available (400 stars) so I got one then, but found out I could only buy one card per day.
I had at least learnt what time to go on the site now though, so the rest of my Wii points were bought, all as 100 point cards early in the morning.
Free is free I suppose, even if I have to buy 8-10 more Wii games just to get a free NES game.