Firstly, WAMP is for development not for business, so be careful, you're warned!
There are 2 ways to set up VH, IP base and Name base, and no matter which way you like, you still need DNS, you can start with some free ones out here, I personally like zoneedit.com. Since you have unlimited IP, you can use the first way, check more info here:
For Name base, you can check this simple sampl
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