First of all, you need a resource file that contains the Arabic representations of all your words. Something like, resourcefilename.ar.resx.
For all other stuff that you need to do, refer these three MSDN articles. They have good examples and coverage as well.
http://msdn.microsoft.com/en-us/magazine/cc163566.aspx
http://msdn.microsoft.com/en-us/library/6eedwbtt.aspx
http://msdn.microsoft.com/en-us/library/twe16yc2.aspx
Hope this helps.