Futurama and Tom and Jerry Tales RSS Feed Links

Futurama Season 5:
http://pipes.yahoo.com/pipes/pipe.info?_id=7a63976420e854e191fdcd9d07916b0d
Futurama Season 4:
http://pipes.yahoo.com/pipes/pipe.info?_id=cfb9fd6020c570132aca822e1e00353d
Futurama Season 3:
http://pipes.yahoo.com/pipes/pipe.info?_id=2ca046533b920640a7f0ecaf3b72ee58
Futurama Season 1:
http://pipes.yahoo.com/pipes/pipe.info?_id=8b9cdf4b172cdab954a10abeff69ff61
Tom and Jerry Tales:
http://pipes.yahoo.com/pipes/pipe.info?_id=736f6866be07ae88680071449c3dedbc
Image of Zinc Favorites:
http://i30.tinypic.com/xooz76.jpg

I used Yahoo Pipes and link these RSS feeds with a graphic, description, PubDate, and author found on the internet.
Would love to see somebody show me how to change the internal thumbnails of the RSS feeds themselves...