To Develop the Website...ASP - PHP - which is better?

[petermoses]

you know C and C++, then C# looks like a normal way forward.
Asp.net and C# is a good combination to work on web development.

PHP and asp.net both have almost same power to build web products.
asp.net is backed by Microsoft and is much easier and fast to work on. You just need a windows system and visual studio web developer to start. Visual web developer is available free of cost from microsoft here :
http://www.asp.net/

I myself have the same profile i.e. i was a c, c++ guy and moved on to learn C# and now work in asp.net development with C#.

Let me know if you need more information.