[BioC] AffyBatch: Replacing probe set IDs with Genebank Accesion numbers?

[JSPC (Jeppe Skytte Spicker)]

Hi All

How do I get from the probe set IDs in the AffyBatch at exprs to e.g.
Genebank acc. numbers?

I would like to be able to make the replacement using the .GIN file
because I am also looking at custom affy chips.

Thank you in advance.

Best regards Jeppe