Steerer Tube Star Nut, or not?

I've just bought the exotic carbon forks off carboncycles.cc, the ones with the alloy steerer tube. But there are no ridges/ribs inside the steerer tube like every other fork i've ever seen. Will a standard star-nut work? I've read about expander plug type things, but they seem to be recommended for carbon steerers.
Any ideas?
Any ideas?
Never put off until tomorrow something that you can do today. 'Cause if you do it today, and like it, the you can do it again tomorrow!!
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yes you can use a SFN or an expander plug if you want.
Parktools :?:SheldonBrown
thanks
Expanders are more faff than they're worth.