Use Global.asax And Implement Handler For It?

I have a Global.ascx and I wrote a simple url writer module :

void Application_BeginRequest(object sender, EventArgs e)
{
try
{
string strPath = Context.Request.Url.AbsoluteUri;
string[] sections = strPath.Split('/');
int len = sections.Length;
string strExtention = sections[len - 1].Split('.')[1];
if (strExtention.ToLower().TrimEnd().Equals("xml"))
{
if (sections[len - 2].Equals("ATM"))
Context.RewritePath("~/Include/XML Files/Orders/TMP/" + sections[len - 1]);
else
Context.RewritePath("~/Include/XML Files/Orders/" + sections[len - 1]);
}
}
catch
{
}
}

it works locally but it dosen't work in the host how I can implement handler for this? Server.Transfer doesn't work also.