How to add comments in the rss

[Shervin Asgari]

Hello. I want to be able to put the #showCommentsPageLink( $entry ) in 
the rss of each user, because our planetplanet uses rss feeds to show 
the planet, and I want to be able to see how many comments each blog has 
received on the front page. However, I am wondering which vm file I need 
to add #showCommentsPageLink( $entry ) in to get it in the rss?

I tried the planetrss.vm, but that didnt quite work.
Shervin