Correct Syntax for Generating HTML Email using AlternateView

I’m trying to use the AlternateView to cater for both HTML and Text clients. I would prefer to use HTML and only fall back to text where necessary. I started re-coding an old console app to do this but I still have carriage returns and newlines as “/r/n” in my code and my problem is trying to figure out how and where to use Environment.Newline instead of these?

AJAX Comet – Is there any solution Microsoft is working on or supports to allow it to be scalable?

I notice a lot of questions and articles talking about ajax comet. I also found some links to make it “scalable” since some of those posts talk about how it isn’t that scalable with ASP.Net. I’m wondering if Microsoft has a solution they’re working on or that is out that addresses an AJAX Comet solution for ASP.Net that is free.