I can not get into the Store...well, can get in but can not buy anything

It tells me I have to enable "Cookies" It gives directions for doing that but I still can not put anything in my cart. I have Windows 7 I tried emailing the store but did not get an answer...(My windows Live email is giving me FITS too

) Can not even open it half the time. Any ideas?? I go to tools-Internet Options-Security-set my security level on Medium......Then where do you click???...I think I have reset it but it doesn't make a difference in the store