Compac Visual Fortran om

Hello,
Thanks to the hint regarding the X86 setup my original CVF version 6.6 is running on windows7(64bit) and compiling correctly!

But I cannot start the debugger or run the program from visual studio.
It stops with the message: ".DLL The required file cannot be loaded - please reinstall Fortran". This message also is shown while opening a workspace. But workspace and projects are running.
What is the real name of the missing dll en weer it is to find?

Next question:
Is there anybody experienced with using C++ run time lib's in this configuration?
Some Quick Windows program's get out of user control after using a (c++ based) dialog window. However the fortran program part is finishing the job under consideration and gets sleeping after that.
It makes no difference where the program is compiled; on my old XP machine or om Windows7. Of course program's are running perfect on XP.
I investigated if some type of dialog is guilty but found that it isn't.
Next I investigated the program structure: In a test program I replaced the user dialog at the begin (which stopped user control) by default values to run the program loop and allowed access to the same dialog later! After compiling the program is working correctly!