How to include thirdparty class(file) in code igniter

[eluser]Unknown[/eluser]
Hi,

I need to include a third party php file/class in code igniter framework. But file name and class name are not in Code Igniter frame work guide lines.
I would like to instantiate the object like '$this->load->library('fadfadsf'). Is this possible.

To be specific, I need to add following code in my project ...
http://pear.php.net/package/Crypt_HMAC.

Here file name 'HAMC.php' and class name 'Crypt_HMAC' are not in code igniter specification.
Can any one please help me to use this class in code igniter framework.

Regards
Salila