R help - Jan 2007 - Comparing two data matrices of unequal size using rcor.test

I am using the rcor.test function available in the ltm package and
wanted to know if there was a way to use this function to compute the
correlation of two datasets that are not of equal length (similar to the
base cor function).  I was thinking an apply function like by might work
but so far I have had no luck getting it to work.I was wondering if
anyone could give me some general advice on this. 


Damion Nero
Plant Molecular Biology Lab
Department of Biology 
New York University