Well can't help either without an exact explanation of what is happening, you seem to contradict your previous post where you said you do have a username and you changed your password already. Now what confirmation email you're waiting on?
Also, what error message do you get exactly? could you paste it here?
If you did not use your account since really long time then it might be deleted automatically due to inactivity, can't judge by how much as the system was supposed to delete them after around 6 months if I am not mistaken, but we definitely do see inconsistency, some accounts stay much longer and some get deleted exactly after the 6 months period. In this case you should be able to create a new account with the same email and username, unless someone has used your old username already, of course.
There's an easy way to check whether an account exists or not by checking its user statistics, however you'll have to be signed in so you can put your username here, pm it or give it to a friend to check for you, whatever you feel comfortable with.
And in my experience, Hotmail usually puts many many website verification emails in the junk folder, to be honest Gmail does much much better in this regards, so if you use a Hotmail account you definitely should check your junk folder.
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