woah woah woah...I've never mixed the two myself, but I remember Paul (link9) posting one time about how include files DO still work within asp.net.
That being said though, if you want to put the standard header into a control that can be reused (which is preferred over an include file anyway IMHO), its simple:
- create a user control
- make the heading look the way you want it in the user
control's designer
- on your main page, drag and drop the user control onto
the page's designer (it'll just be a grey box)
Ta-da! your user control is available for use now. The only thing you may need to do is to put it within a table cell or some other container so that it renders the way you want it to. You'll just have to play around a bit.
If you have some existing asp pages throughout the app, and you arne't sure if you're going to do a full .NET conversion, I'd really look into the whole asp/asp.net running side by side issue a bit more.
hth
D'Arcy