Thanks KJ. I have tried almost every event in the pipeline with no luck. I also brought this issue up in the IIS7/ClassicASP forum, so you can see more details about the issue here:
http://forums.iis.net/t/1150788.aspx
At this point, it seems like there are two issues:
1 - The Response.Cookies collection available to managed code is not populated with cookies set by a native handler
2 - The Response.Headers collection available to managed code seems to overwrite collection items when there are duplicate response headers (instead of concatenating them with a semi-colon).
Any help you can provide me would be greatly appreciated.
Thanks,
Cooper