Friendly Exception pages when ASP.NET starts

[Guy]

Hello,

I use static HTML error warning page when something goes wrong in
Global.asax. (defaultRedirect="BadError.htm"). I also do some
Server.Transfer there when my classes wont initialize properly. I would
like to change the content of the HTML page I use to display an
particular error message, but I cannot use aspx page since doing a
Server.Transfer will ask for a restart of my application by ASP.NET and
then it will re-fail and restart and re-fail...

So what is the best way to change some HTML tag of a page when in
Global.asax ?
Using the HtmlTextWriter ?

Thanks