[R] Nonparmetric statistics with weighted data set?

[Barnet Wagman]

I'm doing some work with a weighted data set (the CPS) and I'd like to 
use nonparametric techniques. Is there an R package that supports this?  
The np package doesn't appear to have provisions for weighted data. (Or 
have I missed something?)  I need to perform both density estimation and 
regressions.

thanks,

bw