Btw. it looks like you are using an old anet.h file, because this was only in a BETA version of ANet (the functions that are not found). Maybe also your ANet.dll is outdated.
You can get the new version for free from http://www.anet-plugin.com. Just download the ANet demo and use those files (in combination with your ANet key). Please read the updates section of the manual before using the new anet.dll.

EDIT: The new manual can also be downloaded on the homepage.