Stan i think your with 1&1
Ive recently got out of there it can be tricky
but it can be done.
I had to leave them as they would not permit MYSQL + 100mb (uk)
And i needed more than that for my forums.
Find a new host, and then reduce your package to domain only.
Obvioulsy everything was backed up and downloaded.
I confused everything my transfering domain names to
diffrent registrants which didnt help,
that should have been step 2

Hope that helps.
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Just rememebered i had to call them to activate
the option to reduce the package via the contracts view.
Its not there by default.