Usercontrol Postback - can i intercept Request

[Alex]

Hi

I have a site that creates a template file "default.aspx" and places
usercontrols in it to display the pages. The beginrequest event redirects
pages however I have a major problem with certain postbacks

currently the following typical page
/mysite/users/register.aspx
would be redirected to
/mysite/default.aspx?users/request

I want postbacks to always go to /mysite/users/register.aspx which will
then be translated by the beginrequest event however after 2 postbacks the
request object gets messed up and the url displayed is
/mysite/users/default.aspx?users/register which is wrong.

Ideally i want to alter the request object either before the postback to
ensure that the URL is /mysite/users/register.aspx and not
/mysite/default.aspx?users/request

I know this is an odd request but any help apreciated.

alex