You should ask the company for a proof: Ask them to give you the Magnet link for one specific of the files in order to check if it's really what you are searching for. Also, locate the original file names. Since LW (and with it the biggest part of the G1 network) does not support searching by hash, you will have to use specific keywords (for example your name inside the metadata).
Try out Phex for the currently most up-to-date G1 implementation, or Shareaza if you want to search Gnutella2 (G2) and ed2k, too.

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</td><td><a href="http://crawler.trillinux.org"><img align="right" style="border:0" src="http://crawler.trillinux.org/img/netsize.png" alt="Network size"></a></td></table>