[BioC] Obtaining values like those from .exp files

[Ruppert Valentino]

Hello,

I wonder if someone can explain to me how I can get the values that is 
generated in the .exp files using Affymetrix Microarray Analysis Suite ver 
5.0 using Bioconductor. I tried to use affy lib and simpleaffy but the 
values I get is very different from that generated by the affymetrix MAS 5 
software. I tried using MAS5 in bioconductor but again I get different 
values.

thanks