Drawing a 3-D plot for PCA?

Can anyone point me a hint (package) how to draw a 3D plot using the first 3

You might want to have a look at ggobi (http://www.ggobi.org) and
rggobi (http://www.ggobi.org/rggobi) which will allow you to look at
any number of principle coordinates.  (And don't forgot to look at the
high ones - interesting structure is often revealed there)

Hadley