[TYPO3] Edit Extension File

[rocky]

rocky wrote:
> Hey List,
>     
> I'm using fdfx_2cols Extention, but I do not want use its CSS. I'm 
> trying to change ext_typoscript_setup.txt in 
> typo3/typo3conf/ext/fdfx_2cols.I got a message saying I do not have 
> permision to do this.Anybody knows how to do that?
> 
> 
> Thanks a lot in advance!
> Rocky

^ ^
  ^   sloved by going to typo3 backend to edit the file.