"Last time I checked, other technologies are rarely backward compatible"

7 years ago I created one of the first Web2.0 websites in PHP. It became very popular and is still up and running and used by hundreds of thousands of people a month. Without any modification. On a managed server that has been updated to new versions of LAMP countless times.

I also wrote ASP (not .net) code at that time. It is long dead and gone.

Yeah! No give me this in Javascript.

Porting would be easy - ActionScript is just a variation of Javascript (both are ECMAScript implementation, to be precise).

You mention resources. What resources do you need? And where are you based?

I am based in Bangalore, India. When I say resources I mean money (infrastructre costs like hosting and software) and another developer and a designer.