WampServer

HI, I've installed Wamp 5 and I'm running PHP version 4.4.7 with Apache 2.0.6. My question is...Is PEAR installed automatically or is their some configuration I need to do to get it to work? What do I need to do?

I'm getting this error...

Fatal error: main() [function.require]: Failed opening required 'WA_DigitalFilePro/HelperPHP.php' (include_path='.;c:\php4\pear') in C:\Program_Files\wamp\www\##########\##########\upload.php on line 2


I someone can help, I;d appreciate it.

Thanks.