I have no experience with microarray data analysis, but I know my way around MATLAB pretty well. I am working on a project and I want to explore the microarray data published on the Gene Expression Omnibus here:

http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE26459

It is an expression profile by array [HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array

There are 24 samples (8 in triplicate)

I downloaded the .TAR of .CEL and .EXP files and used affyread() to load into MATLAB. The problem seems to be that I don't know how to get the gene names from the probe IDs. I believe in order to do this I have to upload the reference genome. I tried to register at Affymetrix to gain access to download the reference genome from their website but they haven't sent me a verification email to complete registration and those people will not respond to my emails!!! Thereafter, I tried using the getgeodata() function but I have the same problem --- I don't know which probeID corresponds to which gene.

Does anyone have experience analyzing data from the GEO with the MATLAB Bioinformatics toolbox?