Seek into wmv file while recording?

Question

Hello, I am using a Managed DirectX implementation I found on the codeproject to record and play wmv files. I want to be able to record and view the real time video in one panel then be able to use another panel to seek back and view the history of the real time video. I am able to do this no problem if I stop recording first, but not while recording. The file is not seekable if recording. How would I go about doing this effectively. Or is there another solution that I should be looking at to accomplish this. Thanks