[galaxy-user] does Galaxy have a tool for converting .sra files to fastq files?

Hello, I would like to download some GEO files that complement my own research with zebrafish embryos but apparently GEO is now only providing .sra flles. For a not very experienced unix person, does Galaxy have a tool for this or is there a clear description somewhere else of how to do it for someone who is not a bioinformaticist? Thanks, el linney Duke University Medical Center