you use asp AND html
all ASP does is processing behinds the scenes
for example, retreiving records from a database, you still need html to display them in the browser
if you wanted to display a personal page you could do:
<font size="3">Hello <i><%=Request.QueryString("name")%></i>, how are you.</font> |
the ASP is in red, and the HTML is in green, in the above code, it would display "hello
name, how are you", with "name" being replaced by what ever is entered into the address bar, eg "mypage.asp?name=Scotty32"
so to answer your question - you can change html pages into asp pages simply by changing the extention to .asp, you only need to "add/remove" code where you want to acctually use ASP, like my example above.
you can use includes, which can be helpfull for your navigation system and headers, so you only need to edit one file.
as i said, it all depends on what you acctually want to do