Iphone and Hotmail account

Hi,

I am trying to get my hotmail account to sync to my iphone. My hotmail account is working on my iphone but i cannot access my folders on my phone. Also if i delete anything from either account, it doesnt effect the other account. so if i delete emails on my phone then log in on my pc the emails are still showing as unread and in my account. This all used to be identical and whenever i deleted something or moved it on my phone it was the same on my pc. I had to delete my email account from my phone and re add it. Since then i have had these problems, can you help? i hope this makes sense.