atom.xml feed in aggregator

I have a blog on blogger.com and am trying to pull the feed into the aggregator. I know I have the aggregator working properly as I've been able to pull in a .php feed without any problems. Also, I changed my atom.xml file using an atom2rss script, and was then able to see my blog headlines in the correct block.

I've tried using all of these:

http://wahmsunited.blogspot.com
http://wahmsunited.blogspot.com/atom.xml
http://feeds.feedburner.com/WahmsUnited

and none of them will work

I've also installed the atom module, but don't see anything about it anywhere. I've activated it in the modules, but have no clue what I should be doing with it from there.

Also (sorry lol), I've activated Syndication and it doesn't seem to be giving me a valid xml feed. There's no extension, though it looks like a valid xml file. Entering the feed in Feed Reader errors out.

Thanks!