Dear Listers: I have a general question and "googling" it does not give me much help: What packages are available from Bioconductor for SNP analysis and how is its capability and scalability, compared with other softwares like dChip? The next question might be a bit off-topic: What softwares (commercial or free) are available for this task? Thanks for sharing any experience, -- Weiwei Shi, Ph.D Research Scientist GeneGO, Inc. "Did you always know?" "No, I did not. But I believed..." ---Matrix III