Blackberry is telling me that my email and password in hotmail not valid; contact hotmail for assistance. Please help!!!

I have a blackberry. I have never had a problem with my hotmail.com email account set up or access til today. Asked me to verify my password. Typed it in; said invalid. Did it like 100 times no exaggeration. Said to contact hotmail. No info other than how to set up hotmail acct on blackberry. Contacted verizon. Tried to set up email account again for me. No good. Said to contact hotmail. I need to put my hotmail account back on the blackberry and have the capability to get my email messages from the berry again. Right now lost my hotmail.com email account on the berry. It works fine in hotmail. Can anyone help me get this thing sorted out? Verizon can't. Blackberry told me to come to hotmail for help. Reading instructions on how to set up an acct in blackberry only gets me the same message - email acct and password invalid, contact hotmail. Please please please help. Desperate professor. Thanks.