1. Put Online your wamp server.
2. Port forward your router ( TCP port 80 to the PC running wamp )
3. Make the PC running wamp have a static IP Address ( or port forwarding may stop working on a reboot that gets you a different ip from the routers DHCP server )
4. Tell your users to use [
111.111.111.111] to access your site
OR
4a. use a dynamic dns service like DYNDNS.COM to allocate a [
mysite.webhop.org] style address instead of the ip address which may change when you reboot your router