How ironic, I just finished answering a similar question in this
thread about FlashPath Smartmedia adapters.
I have an Acomdata USB 6-in-1 MultiFlash card reader, for CompactFlash, SmartMedia, SD/MMC, and Sony Mediastick. It works with my Knoppix box without a kernel recompile; I wrote a
knoppix.net mini-howto about it. However, I don't use Mandrake or Red Hat, so I don't know if it will work without a kernel recompile for you.