[BioC] GOstats with yeast2

[Sebastien Gerega]

Hi,
what is the best way to use GOstats (specifically a hyperG test on KEGG) 
with the yeast2.db annotation? I have looked around the mailing list 
archive and the fact that yeast2.db doesn't have a yeast2ENTREZID 
environment has been mentioned several times. However, I haven't managed 
to find any mention of how to get around this and use the annotation 
with GOstats.
thanks,
Sebastien