Conversion of framework to ASP.NET

[eluser]Unknown[/eluser]
First of all, I'm just picking my jaw off of the floor. I just realised that since I bought Expression engine and I have a login on the EE site, I've got the same username and login on the CI site. Not even Google has single sign on right (their Google Accounts always complains about my different logins and the services I've got on each account). Yet Ellis Labs has managed to pull that off.

Anyhoo, I was thinking. Would it be legally allowed (I did read the license and it seems like it should be allowed) to convert the framework to ASP.NET?

Now you might say, hey just use PHP, but I'm more comfortable with ASP.NET and I plan on possibly converting the framework. If in the future I want to convert from ASP.NET to PHP, it should be much, much easier.