[BioC] problem with GEO site

[Guillaume Deplaine]

Hello,

    I found a file on GEO web site. this files was processed with MASS 4 
until normalization. I was wishering if it's passible to do a clustering 
analysis of this file with R ?

    My second question is if it's possible to retrieve raw data of this file 
processed with MASS 4?

Thanks for your answer