Redirect to another URL only when there's a specific string in the URL.

Hello,

I would like to redirect to another URL only when there's a specific string in the URL.

For example, by typing "http://host.domain.com/dir/app?login", I'd like to redirect to another URL (a login screen because of the "?login" string).

However, by typing "http://host.domain.com/dir/app", I'd like to have no redirection at all.

I took a look at MS documentation on redirections, and I saw that I can use wildcards.
I'm able to redirect *.html to another URL... but I don't seem to be able to redirect to another URL based on a specific string in the URL.

Is there a way to achieve this?

Thanks!
Pascal

You can accomplish this with asp or some other active server scripting pages like php. I think there are some commercial isapi products that will give you this kind of functionality.

Thanks for your answer,

Someone suggested the same thing here:
http://www.iis-resources.com/modules/newbb/viewtopic.php?topic_id=4191&forum=5

Pascal