How to Add Customer attribute in Magento

Do You want to add Some Custom field with

• Registration Forum
• Login Forum
• Cart Checkout
• Add to Cart 

There are So Much Extension Free or Paid Extension You Can find On magentocommerce. But Which one is best is forever Confusing. which one is perfect or which one ruin all your magento..

I had Same issue. I want to add some Field with my registration forum and i find the Solution with

Customer attributes tool

Purpose of Customer Attributes Manager extension is to help administrator can manage and add attributes of customer easily. The Customer Attributes Magento module makes it possibly to create different types of attributes such as text field, text area, dropdown, multiple select and date field.

Features:

* Unlimited number of attributes
* Displaying in the customer account area
* Add attributes to the customer registration page or disable them for guests
* Ability to make attributes fields mandatory
* Specify default attribute value
* Enable unique value for attributes
* Various attributes types: text field, text area, date, multiple select, dropdown
* Attributes input validation: alphanumeric, numeric only, alpha only, url, or email * Ability to change customers’ data in the backend * Show attributes in admin grid
* Easy customer attributes management

Review :- This Extension is work Like charm i have installed 2-3 before this. i found some fetal errors. but with this its will be easy for You too add custom column.