Well,
Typically if you are using Visual Studio .Net (or maybe the matrix thing?)
You wind up with an *.aspx and a dll in a bin directory in that folder
i.e.
www.mysite.com/stuff/mypage.aspx
and in the /stuff/bin directory is mypage.dll, which is the code-behind stuff in compiled format as a dll.
You still have your aspx page that contains the html, javascript, form, and whatver web controls on it.
Does this answer the question?
fv