Dear Odoo/OpenERP guys

I am building a new company (everything new account, customers, products etc etc)

The system comes with a small Chart of Accounts which I want to replace with my own accounts... but when I try to delete the default Account Payable account .. it says it is associated with a Customer...

So I changed its number to 99999 (to drive it to the end of my chart of accounts) and then I changed its "type" to be a regular account ie not the Payable classification 

When I try to add a Customer it still defaults the AP account on the Accounting Tab to 99999... 

Can you please advise me where this default account is "set" of how I can change it to be my proper AP account...??

Thank you

Regards to All

Kim