Im sorry, i did forget important information in my previous post , im useing the HABmin application, and this is where the widgets is not visible/ addable.
Really sorry about this,
I can of course post the sitemap file but it should contain nothing (just clicked new in the HABmin app, then no widgets is choosable).
Although Habmin is a very good place to configure for example z-wave devices or setup some item for persistence, it is not the best place to start with a sitemap.
The easiest way to add a new sitemap is to use a text editor (depending on which platform you use for editing, for example on windows it could be notepad++).
Then read the wiki for items and sitemaps and save those two files in the appropriate folders (depending on which way you used to install openhab, either apt-get or manual).
To get a quick solution put one item in your items file