Plugin Help

[eluser]Unknown[/eluser]
hi,

i am having difficulties with plugins-

i am trying to print html to pdf, using the following link as model


PDF generation using dompdf

but, somehow i am getting the following error-

Unable to load the requested file: plugins/to_pdf_pi.php

but "captcha" is working fine, then i tried with copying contents from to_pdf to captcha.
but, i dont know how to use those functions inside the plugin, calling them directly results in error..


can someone show me "Hello World" with plugins?


please.