See http://msdn.microsoft.com/en-us/library/ms235324%28v=vs.80%29.aspx for reference on _strnicmp.
Diapolo you should get a job at Microsoft and get them to remove all those ugly _ from the APIs :)
ACK
it is disappointing that the #define lives in two places, rather than one central location.
At some time we perhaps should introduce something like a special windows header, as there are a few places were there are duplicate WIN32 things used in the code (that IE define for example).
Yeah, windows requires a lot of that hand-holding in the form of extra defines / un-defines. It might be worth making a config.h header that includes base OS includes and the necessary voodoo such as defining (u)int_XX types. On the other hand, that can easily grow out of hand into a headers.h-like file again... undoing all the work we did to make different headers for different concerns. This needs careful compromise.