Making all pages load https and force ONE Unspecific page to always load/redirect http

[eluser]silentkillerjoe[/eluser]
Tried didnt work, then tried with the \? instead and it still didnt work. Hmm.. Here is an example of one of the urls.

mycompany.com/cks.php?k=59076768A4ABE68D00CC727230985D48&cdk=true

Thanks for your help btw. I only posted in this forum because I followed a link on google and saw a similar post about loading a certain page in https and it seemed like using CodeIgniter was in part of the steps.. Ill look for the post again

EDIT: Btw, if you help me get this done. I will pay you via paypal or alertpay.