You will not be able to use that dll file in your Visual C++ 6.0 that's for sure.... You need the source code for it and use that one in on your Visual C++... The GnucDNA you have there, is a old one and out dated as it can be! GnucDNA is the Core for Gnucleus p2p application, and created by John Marshall... You can read more about it on
Gnucleus
It seems you don't have a application to use the GnucDNA on, so it will be usless to have it installed on your pc-as you pointed out it is correct installed... The are two type of GnucDNA : 1) GnucDNA.dll 2) GnucCom.dll
The GnucDNA. dll is the old one,and the GnucCom.dll is the newer on and mostly used to day... The are a few GnucDNA based p2p application that still in use on Gnutella and G2 network... Gnucleus, Morpheus, Foxy, Wru, just to mention some... The ide to make the GnucDNA, was to seperate the core from the main application... So just to develop/update the core and not the application it self...Let say it become more easy, and John Marshall's vison was that every body could make them self a p2p application easy, since the core was allready finished...