Read the error message: it is pretty clear:
Quote:MSVCR71.dll is missing from your computer. Try reinstalling the program to fix this problem.
A file which is essential for running C++ apps is not installed on the target computer.
If you used an installation package, then check it adds the file.
If you didn't, then probably it would be a good idea ... but this may help in the short term: MSVCR71.dll is missing
] - it's about IIS, but it explains a reason why it might be missing.