[R-SIG-Finance] fImport : where to get a list of ticker symbols?

[Gero Schwenk]

Hello together!
I want to undertake exploratory analyses (clustering, PCA, etc...) on 
historic data downloaded with yahooSeries (fImport-package). In order to 
download the data, I need a collection of ticker symbols. Is there some 
list or table out there, so that I don't need to look up the ticker 
symbols manually? Can anybody give me a hint?

Kind regards,
Gero