PodCast Question

[Jane Jordan (Gmail)]

I listen to podcasts, and some of them I delete by hitting the delete  
key on the particular podcast in the Podcast part of the iTunes  
library.  That being said, they keep popping back up as undownloaded.  
Occassionally this is useful, but what if I am certain Idon't want to  
hear it again?  How do I take it out completely?

Jane