Yahoo sitemap the same as googles?

[sumitkhare]

Hi,

I have submitted my google sitemap.xml to yahoo but after 2 months it only has 2 urls indexed........this means that it won't accept the same sitemap code.
What i now did was deleted my feed and added urllists.txt that only has all my website pages on each line. no codes added
Can someone tell me if i am doing anything wrong here. Need help with this badly.