rm in a regular expression



Hi there, it's been a while that i'm not join'g the group
i need some tips..under Leopard is there a way to rm the file not
converted
textutil -convert html gnu.webarchive i will have gnu.html
i would like to remove the gnu.webarchive can i do like this
textutil -convert html gnu.webarchive| rm {} ?????
Thanks in advanced
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