[BioC] Annotation

[jmungal at berkeley.edu]

Hello, I am an undergraduate doing summer research at Stanford University.
 I've downloaded a few GSP files from GEO and converted them to the class
exprSet.  Typically with an object of class exprSet you can simply type

> annotation(exprSet.object)

and it R will give you the annotation key for the corresponding LocusLink
ID.  However, with the data sets I have, there is no annotation.  Does
anyone know an easy way of finding the LocusLink ID's for such a data set?
 Thanks very much for any help.

-Justin Mungal