MSVCR71.dll
If an error occured when running a program that is using the version 7.1 of the runtime, you must intall it to get it work.
But the problem is, where is the runtime?
Yes, it is only available/included with .NET 1.1! So get it, install it, and it should work. Also, guest what... it's not installed by default in Windows Vista ;)
-f.