How can i tell if i have Curl and..

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Hey
How can i tell if i have Curl and ICONV in my PHP

am trying to get a mod working below is the problem am getting "White screen"

I run a full dedicated server and as you can see i dont know to much

Thanks

You must install it  and configure it appropriatelly (please read parameters descriptions carefully) 
- You must have installed CURL in your php. Most servers already have it. Just install this mod and if it is not working then ask your server stuff to install CURL. In meantime you can disable mod or remove flags so users will not be affected. If you get blank page for translation pages (it will not affect your normal pages) it means that you don't have CURL installed - just install it 
- You must have installed ICONV in your php. Most servers already have it. If not an error will occur or blank page for translations.