WAMP servers

Hello. Does anyone use a WAMP server? And, if so, have you found one to be better than another? I am using a WAMP server entitled, aptly enough, WampServer (formerly WAMP5). In the few weeks I have been using it, I frequently get messages that a certain library or routine cannot be found. My question therefore is: do these WAMP servers typically come with all of the php libraries and subroutines that are most commonly needed? I have the impression that this WAMP server does not have some of the libraries and subroutines I need (or would very much benefit from having, anyway). Thanks for any information you can give me about WAMP servers. Rod Clay clay.1@osu.edu