they do have a "shop online" link on the site, which kind of lends itself to be a purchase-use product 😉
if you wanna do .NET stuff, M$ does have dev editions of VS.NET for each language/etc... for free, it does 95% of what full VS.NET does
only dumb thing is that you have to have a C#.NET program, a VB.NET one, a web app one, etc...
kinda silly but it's still kinda cool although i'm sure you were wanting a php ide, but just thought i'd let ya know... cuz iirc, i thought you were the one talking about .NET awhile back, i could be wrong tho
stolzyboy