I have a VC++ 6.0 dsp file. I tried to import it by opening VisualStudio Professional 2010 C++, and from the menu File->Open->Project/Solution. Then I specify either the DSP or the DSW, and both pop up a message:
The project file 'C:\Path_To_My_File\MyProj.dsp' cannot be loaded, do you want to remove the unloadable project from the solution?
After clicking yes, this is displayed in the solution output:
C:\Path_To_My_File\MyProj.dsp : error : Project upgrade failed.
Any idea how to fix this problem?