dnsapi.dll error

[Shokushu]

I'm running Kubuntu Saucy Salamnder 13.10 x64 and have installed Wine from the Ubuntu Wine Team repository:
https://launchpad.net/~ubuntu-wine/+archive/ppa

The versions are:
wine1.7 1.7.9-0ubuntu1
winetricks 0.0+20130707~precise1~ppa1 (from Saucy repository, despite the name)

I'm getting the following error with several Windows applications under Wine:

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err:module:import_dll Library DNSAPI.dll (which is needed by L"Z:\\media\\bla\\bla.exe") not found
err:module:LdrInitializeThunk Main exe initialization for L"Z:\\media\\bla\\bla.exe" failed, status c0000135

It seems it can't find "dnsapi.dll". I've tried several things to remedy this:

• looked at the winetricks dll list, but I couldn't find anything which would install dnsapi.dll
• looked at the Wine faq and found this:
  

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  10.16. Why doesn't DNS resolve in 64-bit operating systems?
  
  Many distributions don't provide all the 32-bit compatibility libraries that wine needs. In this case, wine needs 32-bit DNS libraries. On Ubuntu/Debian, this package is lib32nss-mdns. To install it on those OSes, use:
  
  sudo apt-get install lib32nss-mdns 
  
  For other operating systems, the package name and installation method may differ. Consult your distribution's support channels.

  I've installed lib32nss-mdns (0.10-3.2ubuntu1) from the Ubuntu Saucy repository, but that didn't help.
  .
• copied over "dnsapi.dll" from a Windows 7 SP1 install and put it in the Wine system directory:
  ~/.wine/drive_c/windows/system32/
  
  This didn't change anything either, and neither did renaming the file from "dnsapi.dll" to "DNSAPI.dll" (since Linux makes a distinction between small letters and capital letters).
  
  Then I remembered: copying dlls into the Windows system directory does nothing, you need to register them using regsrv. How do you register dlls with Windows in Wine?