OAuth test server and help my slow brain understand what I'm doing.

Hi. I've been tasked to integrate some financial data into our site. The provider uses a 2 legged OAuth mechanism for the security. I have my consumer key and secret and the service end point, but I'm at a loss to even know if I'm doing anything right. Does anyone have a script that uses 2 legged OAuth I can use to make sure I'm doing it right and to be able to just substitute my keys and end point as a test to the service I need. Alternatively, if any one has done a 2 legged OAuth using pecl/oauth, then please can you give me a few pointers! Any help would be great! Regards, Richard.