Hi, I am currently trying to get (the symbols of) the genes associated with the SNPs on one of the 250k Affymetrix SNP chips using pd.mapping250k.nsp_0.2.8 and oligo version 1.0.2-3 (under Windows XP) -- but without any knowledgement on SQL. Is there any function -- similar to getSYMBOL or lookUp for other Affymetrix microarrays -- that can be used to obtain these gene symbols for a given set of Affy- IDs of the SNPs? Or is there another possibility to get the associated genes? Thanks a lot, Holger -- Ist Ihr Browser Vista-kompatibel? Jetzt die neuesten Browser-Versionen downloaden: http://www.gmx.net/de/go/browser