DeMignon: I would advise against downloading single DLLs from any platform you don't absolutely trust, especially when the original source is still available.
msvcr100.dll should be part of the
Microsoft Visual C++ 2010 Redistributable Package (for this game you probably need the linked (x86) version, the (x64) version is
here). Check for Windows updates after installing.
GOG also provides a download for
OpenAL32 ver.2.0.7.0
To clarify where to put DLLs:
On 32 bit Windows, put them into C:\Windows\System32
On 64 bit Windows:
- put 64 bit DLLs (aka x64) also in C:\Windows\System32
The folder is only named ..32 to offer backwards compatibility for older programs, but contains 64bit system files.
- put 32 bit DLLs (aka x86) in C:\Windows\SysWOW64
WOW64 is the Windows on Windows functionality on 64bit systems. It means running Win32 programs on Win64. Hence the 32bit DLLs are to be put there.
Hope that's helpful for somebody, even if the original question is already a few months old ;-)
I definitely find it helpful. Had no ideas where these DLLs come from.