R library (libraries?) to address the Progenetix API
amtab <- pgDataLoader(icdm=c("9500", "947"), db="arraymap", genes_m=c("MYCN", "TP53$"))
It basically constructs a URL and executes this as the target of a read.table() function. Feel free to use the returned URL as template to create your own calls, based on the API documentation in the Progenetix Wiki.