I think you can use the....
command to BUFFER the response that will be written by the response object
then generate your code for your ASPX page by using the...
Response.Write("Your ASPX page code dynamically genrated/written here")
The writing of the dynamic page code may span several lines and take several response.write lines
and finally FLUSH the buffer to the output with the ...
I recommend you check out the documentation on MSDN for the RESPONSE object though.
As what I am telling you is what I can remember through my use of the command via CLASSIC ASP some years back.