Outlook Express questions...Please help!

I am getting BOMBARDED with spam and I have tried various spam programs, but I like NONE of them. SO, I was thinking about changing my email address, HOWEVER....if I do this, my current email address will no longer be valid and therefore, I will not have any way to access the account in Outlook Express. This sucks because I have folders of information under this address that I need.

How can I still get to these folders without having to actually "connect" to this user name???

Please help! I lost other things this way in the past!

Thanks in advance