Embedding a login form from an aspx site on a php home page

Hello.

I’m not a developer, so I’m really lost. I want to have a login form like the one seen at the bottom right-hand corner on http://www.medqresearch.com/.

I’ll have this on the home page of a site built on php, and the login form is on another site built on aspx. How can I do that?

Your help is most appreciated.