[BiO BB] E.coli K12 W3110 and MG1655 gene id conversion

[Sarah Wang]

Hi, 
I need to convert gene ID at KEGG of E.coli K12 W3110 (like "JW0001") to the
corresponding MG1655 geneID, ideally to Blattner Number (like "b0001").
Does anybody know where to download this conversion table or does anybody
have one?

Thanks

Sarah