[BioC] displaying heatmap with gene names instead of Affy probes

[Ruppert Valentino]

Hello,
          Can anyone tell me how to display heatmap with gene names instead 
of Affy probes when displaying heatmap from Affy exprsSet. I looked at the 
heatmap function and exprs class but I am at a loss as how to change the 
name on the heatmap to Gene name instead of Affy ID.

I managed to get the geneids as follows :

geneid <- mget(geneNames(eset), envir = hgu133aSYMBOL)  # get gene symbols


but would be greatful for any advice on what to do next to get heatmap with 
gene names instead of Affy IDs.

Many thanks

Ruppert.