-- Solution found! --
Yes.. got it! I am so sorry for troubling all you Monks!
I got one more installation of MinGW on my System.
Installed at C:\MinGW\.
Found the hint to this here: dev-c-compiler-just-not-working
However, although this installation is not mentioned in the system PATH, doing
a dmake run will refer to it. As versions are different:
Strawberryperl 5.10.0 comes with gcc 3.4.5
My systems has installed gcc 4.7.2
it is quite likely that compilation and/or linking it will break at some point.
Thanks a lot to all you monks out there!!!