[BioC] Finding TSS locations

[Bartlett, Thomas]

Hi,

I'm trying to find a way to get the locations of the tss (transcriptional start site) for genes (I need this for work analysising Illumina 450K methylation data). I've tried the package GenomicFeatures, and have successfully downloaded and loaded the package, however the relevant command data(geneHuman) doesn't seem to work, producing the following error message:
Warning message:
In data(geneHuman) : data set ‘geneHuman’ not found

I'm currently using R 2.15 on Windows Vista (I also have access to a Unix-type machine)

thanks in advance for your help

Tom Bartlett