Showing form postback progress in a new window

I have a form that creates and updates a pound table during a postback, and right before I submit the form I do a window.open to launch another page that reads from the pound table which stores where the postback is (Step 1, Step 2, etc) auto refreshing every 5 seconds. The problem I have is right after it spawns and loads originally, when it refreshes, it waits for the original form to complete its postback before it runs its own postback. I believe this is because IIS see the single connection and therefore waits till the first postback completes before running the spawned window's refresh. Any ideas how I can accomplish this async'd or in some other manner?

[721 byte] By [GMan6] at [2007-12-16]