Uploading to Flickr?

[eluser]Unknown[/eluser]
Anyone know a good way to interface with flickr uploading? I am using Zend integrated into CI to access the searching functions without a problem, but it does not support any of the authenticated methods.

[eluser]Unknown[/eluser]
I posted more details about what I have tried and the error I am receiving when I attempt to do this using PEAR here: http://ellislab.com/forums/viewthread/80745/.