good to go here (assuming <username> is actually replaced with your username) this is the output of my gdm file:
Yes my gdm file is the same except for the comment line and my username <njtuneguy>, so like you said, good to go.
the autologin should take you to the gnome desktop environment assuming you have runlevel 5 enabled.
I haven't altered the runlevel yet. Without the autologin edit to the gdm file it boots normally to the windowed gnome desktop. When I edit the gdm file for autologin it boots/loads normally ie., the computer boots, the Fedora loading "progress bubble" fills, next the Fedora blue backgroud diplays with the mouse cursor appearing and the little rotating circle dots floating around it. That's where it stays, I'm never presented with a desktop to navigate and use.
the WebVNC app requires an X session to be running hence the autologin.
I haven't been using the WebVNC app, I'm using Chicken of the VNC for Mac. I'd eventually like to be able to login from outside of the network... I believe I read that WebVNC is limited to being used only within the home network.
What exactly is it that you are trying to accomplish? A headless hda in runlevel 3 or to be able to login to the server via the WebVNC app?
I infer from your question that it's not possible to do both (even using Chicken of the VNC)? I'm just trying to conserve resources, but perhaps my box has enough to not really make a significant difference if I start X (AMD 939x2 3800+, 4 gigs ram, (2) 1TB HD in raid0)? If it does make a big difference then I'll probably want to "login from the command line via SSH and manually start X" per the Amahi VNC link
http://wiki.amahi.org/index.php/VNC#Set ... atic_Login (under heading "Setup Automatic Login "). In that case I know how to ssh into the box, but how I start and stop X? And can I enable autologin with the computer booting at runlevel 3?
Also, to start vncserver at boot I entered "chkconfig vncserver on" in terminal as root, but it doesn't start... I have to manually start it each time!!
Lol... too many questions/issues for one post???

Headless HDA: Fedora 12, AMDx2 3800+, 4gb DDR 3200, 40gb HDD (Boot & 8.4gb Swap, mounted at "/boot"), 2x1tb 7200rpm HDD SoftwareRaid-0 (mounted at "/"). Linksys WRT54G v.5, 100mbit LAN to HDA. WLAN clients: Macbook 2,1 OSX 10.6.2; Windows XP SP3. Comcast 15mbit.