WampServer

I have a PC with Windows Vista installed in drive C: and Windows XP installed in Drive E: I Install wamp in drive V: (external harddisk connected by usb 2.0) and mysql running ok but not apache. I go to v:\wamp\apache and double click in apache.exe, and apache running ok and also all applications in localhost. All references for apache in httpd.conf aim at V: ¿What is the problem?
Forum: WampServer English