I have made a few changes, probably breaking.
1, RxNet.DLL is no longer dependant on Bricscad's COM modules at all. This will not affect your code, but it will affect how you reference the COM DLLs in your project. You will need to explicitly reference Bricscad's COM DLLs in your project (using the com tab) and setting the copy local property true, Or, build your own COM metadata DLLs using TLBimp.exe. Visual Studio 2010 no longer needs these metadata DLLs, but you will still need to reference the COM entries if your app uses COM.
2, While the installer still installs the modules in the same location as before, and registers demand loading, you are free to stick the RxNet.DLL wherever you like. You can manually change the demand loading path as well. The RxLoader.txt file should be in the same folder as RxNet.DLL.
I didn't have time to do much testing, so let me know if you run into any issues