Maya Does not render Curves. You will have to convert them into another type of geometry or apply a paint effect to them.
Other than that, its lofting them from one curve to another.
Chris (formerly R@nSiD)
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When the power of love overcomes the love of power the world will truely know peace - Jimmy Hendrix
Winner SM VFX Challenge 1
3rd Place SM SteamPunk Challenge (May 2007)