Can I upgrade from FC3 to FC4 in a "online" manner ?

To: fedora-list@xxxxxxxxxx
Subject: Can I upgrade from FC3 to FC4 in a "online" manner ?
From: Yue Feng <2525275@xxxxxxxxx>
Date: Mon, 13 Jun 2005 21:12:45 +0800
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Reply-to: Yue Feng <2525275@xxxxxxxxx>, For users of Fedora Core releases <fedora-list@xxxxxxxxxx>

I mean, can i upgrade my fc3 box while it is running, and finally i reboot it, and then it becomes a fc4 box? is it possible? and how? Thanks!!

Follow-Ups:
- Re: Can I upgrade from FC3 to FC4 in a "online" manner ?
  - From: Matthew Miller
- Re: Can I upgrade from FC3 to FC4 in a "online" manner ?
  - From: Rahul Sundaram