Loading libapreq2.dll fails on windows

I always get the following error:

C:\development\xampp\apache\bin>apache
apache: Syntax error on line 143 of 
C:/development/xampp/apache/conf/httpd.conf:
  Cannot load bin/libapreq2.dll into server: The specified module could 
not be found.

It seems that the dll msvcr80.dll can't be found. I've tried to put this 
dll in the same folder, but it can't load it. How do I solve this?

Franky