I have a 6 digit also. It's kind of funny because I had forgotten my password but remembered the number, and I saw that I had my old ISP's email address in there so I couldn't reset it. What I did was sign up for a trial dialup account on my old ISP so I would get assigned the same email address, and then did the password reset and cancelled the ISP account. Just so I could keep my 6 digit icq number.