Hello Madeit5pr,
Welcome to adCenter. I am glad to hear that you signed up for an account.
As part of the adCenter Fall 2009 Upgrade, you may have noticed an issue where you are unable to create or save ads with "clickbank.net" in the destination URL. We are currently looking into the cause of this issue and hope to have it resolved in the near future. We apologize for any inconvenience caused by this issue and thank you for your patience.
Thank you,
Microsoft Advertising Support