[Typo3] Script page type not available

[amorphous]

>You should not do this with a content element but with TypoScript.
>You can use the USER/USER_INT object for that purpose.
>Have a look at TSref for a description.
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Thank you for your answer. I have integrated my php script using an USER 
object. It works, but how do I pass parameters to the script now?

As I understand this, I have to use typoScript as well as a content 
element at the same time.

What I basically want to do is just build something like the 
Photomarathon example: 
http://typo3.org/documentation/document-library/doc_tut_frontend/Comments-1/
The Photomarathon site has three sub-pages (the categories landscape, 
potrait, citylife). Each sub-page calls the same php script, but with a 
different value for a parameter "categoryPid" (which correlates to the 
current sub-page). This parameter is passed through the "Script Type" 
content element. Now, since script type is deprecated, what should I use 
instead?

Sorry, this is newbie stuff, but since the documentation is not 
up-to-date I don't know where to get this information.

Thanks for your help

-Harald