[BioC] CMA help

[Clara Pons]

Hi to all,
I'm new using R and CMA. I want to create some classifiers/biomarker 
from peach microarray data using using the different classification 
methods implemented in CMA. My problem is that I don't kown how to 
prepare data and introduce class labels given all examples are based in 
the prepared dataset golub, but no in a raw gene expression matrix.
My goal is to create classifiers based in genotypes and the observed 
phenotypes. I have a gene expression matrix with 3533 genes (rows) and 
48 microarrays corresponding to 16 samples (replicates each). Out of 
them 8 are from a sensitive  and 8 from a tolerant cultivars. Samples 
are taken at harvest and ripe and two different treatments (3 points each).
Please can somebody tell me wich commands I should type to define labels?

Thanks a lot in advance

Clara