Undefined function in Statistics module

[treshr]

I've installed the latest version of the Statistics module in CMSMS.
I get a lot of googlecraler visits so I want to ignore those IP adresses. When I fill in the IP address i get the following error:

Fatal error: Call to undefined function fnmatch() in C:\domains\pbxs.nl\wwwroot\site\modules\Statistics\Statistics.module.php on line 904

It is a Windows Web Server with PHP5 installed. The version of CMSMS is not the issue. The version of the module is "0.8.0b9"

I know what it means and if I get some time I could probably fix it but does anybody else have this problems with this module and if so did you find a solution to this problem? I don't want to do work that somebody else already did