Linking drupal nodes to the php registration ID

Hi,

    I have created a drupal 7 site. Now I have created a registration form with ID field. My question is how to link the Node id to the ID(FORM)

eg drupal node is node/6--> alias example

form id : 123 which is created by auto_increment

it should come as  example 123

Can you please help me in this regarding.

Thanks & Regards,

Aditya