forgot my security questions

My daughter got a new computer...we originally set the itunes account on my computer but it was for my daughters use with her ipod.

She was trying to set up the itunes on her new computer but she entered the password wrong. We tried to correct the problem but then itunes asked use security questions that I have forgotten the answers too. This is very frustrating. I don;t understand why these security measures are so difficult.

How do I retrieve or reset the security questions?