I'm trying to do this same thing, and I can't seem to get anywhere with the in game menu (no option to edit account infromation, only password, personal, and e-mail info) and on the website, you must fill in the credit-card information to exit the form (can't leave it blank).
What I have done is email Roni, and she quite promtly e-mailed me back that she would pass my request on to HiTech. This was only yesterday, so I haven't heard anything yet, but I feel quite confident I will.
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Greg 'wmutt' Cook
332nd Flying Mongrels