php - Wordpress Widget: display child pages from specific page -

I've downloaded some plugins in advance, but nobody satisfies what I want: to show me A widget requires a child page of a specific parent page (and for each 'li' and a certain background-color, to include an icon on the borders, to customize it via CSS.). I have also downloaded a plugin that enables me to add categories to each page, thinking that I can use a widget that shows a specific page title from the fixed category (and thus solving the problem). Does, but I have not got anybody to do this

Should I edit the default page widget (which in fact I have a page ID, page title and page Lets you sort through Rdr is), it also enables you to sort the pages of a Specific category? I do not know much PHP to do this.

Although I use the default page widget and leave every page ID, but the ones I want to show to me, but then when someone else creates a new page, this widget displays It should be done, and it should not be because only the original subject of a specific parent page should be displayed.

This is the way to do this ... taken from Wordpress Codex ...

   << ul> = "Gtc:" menu_order ")) ;? & Gt; & Lt; / Ul & gt;