[R] How can I generate a random network with given cluster coefficient using R?

[Wuming Gong]

Hi list, 

I have read the mannual of package graph, but it looks that three
functions randomEGraph, randomGraph and randomNodeGraph cannot generate
a random network with given cluster coefficient. 
Is there any exisiting R package for such kind job and if no, how can I
perform this job with existing graph package?

Thanks

Wuming