I'm running Windows 7 32 byte  using Power SDR 2.0.22

If Power SDR tries to load and then give ERROR deltapni.dll is missing here is what other hams  have done to work around 

http://dir.groups.yahoo.com/group/powersdr-iq/message/1813

To make the Delta 44 sound system to work I downloaded Windows Vista 32 SP1 version. After install had to add a older DLL file which can be downloaded from M -Audio web site the dll is DELTAPNI.DLL if you have Windows XP on your system copy this file from windows 32 system file , them add it to  the Windows 7 system 32 file.

Here is the system setup and running

 

 

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