I think you've found the place you need to be!
Atkins is more than just eating fish, meat and poultry.
Check out the links in the top orange bar....and the Quick Links to the right....and these links:
http://atkinscenter.com/howto/index.html and
http://www.fitday.com/WebFit/Index.html
Atkins center has a complete explaination of how to "do" Atkins....and Fitday is a site where you can list all the food you've eaten and find out how many carbs, protein and fat you've eaten.
One thing with Atkins is you MUST have fat in your diet.....Dr A advises against trying to do atkins low-fat.
There are a lot of reasons for a "stall"...not eating enough can be one reason....read thru some of the posts for ideas and inspiration!
The main thing is stick with it! Don't give up when you hit a stall!
I've only been on it for 10 days, lost 7# the first week....and now I'm struggling to get enough food in me to prevent a stall.
There's a lot of support on here....read and respond to as many posts as you want.
Two things to remember....there are more low-carb plans out there than just Atkins (maybe you should check out the others and see if another one might be better for you!) Low Carbing (LCing) should be a lifestyle change, not just a diet. Even if you don't loose pounds you should continue to loose inches.....or at the very least feel better!
Good luck and keep trying!