Is it possible to kickstart using proxy http

[Bala]

Hi All,
       I would like to kickstart and install using
http, but for me I need to use proxy server to access
http, in that case how/where to specify the proxy 
details for http??.

   In redhat kickstart config util there is no
option to specify the http proxy details, in normal 
cd installation, the installation program ask the 
proxy information.

thanks in advance,
-bala-

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