404 errors

Hi,
Rob showed me a great technique using 404 error pages to execute asp pages. Using this method, it is possible to write SEO friendly URLs such as www.mysite.com/books to execute database driven pages which would normally look something like www.mysite.com/browse.asp?category=books.
My problem is that I'm still on a shared server, and our host company want to charge us for setting up custom 404 pages. I'm wondering whether it is possible to set up something with asp.net to catch 404 errors.
I've tried writing the following in to the web.config file, and this allows me to redirect to a custom 404 error page, but only if the page requested is a .aspx file. It won't redirect from a URL such as www.mysite.com/books (without .aspx on the end)
<configuration>
<system.web>
<customErrors mode="On" defaultRedirect="/404page.asp">
<error statusCode="404" redirect="/404page.asp" />
</customErrors>
</system.web>
</configuration>
Any help appreciated.

Simon... you'll need the error document to be set in IIS to catch those errors without aspx extension.

I would just pay your host... you need to have that error document for what you want to do.

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Rob - Webforumz Founder

ASP.NET will only catch errors within the application scope, which doesnt include classic asp pages! ...get a decent host