It's unclear from your post what is your exact problem, but it seems to me, that you need to create an RSS feed in ASP.NET.
While this question is not related, still we can answer it:
In short, you need to create a formatted XML document, with the RSS vocabulary. The document itself must have some generic parts (like title, link etc) and should have other parts (like the content you want to syndicate).
You could do a search for a more in depth description and pick the approach you want. I have picked to which are more or less decent, though not extremely in depth:
1) One from MicroSoft -- http://msdn.microsoft.com/en-us/magazine/cc163989.aspx
2) One for a prominent developer -- http://www.uberasp.net/getarticle.aspx?id=17
In addition, you could try seeking further help in programming forums like StackOverflow
Note: I have answered your related post thread as well.
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