VNC - Screen Resolution Problem on Wake from Sleep

My question: When it either wakes from sleep or cold boots (NOT on restart for some reason), Mac OS X seems to be confused on the previous resolution of my screen. On wake or cold boot, my main screen SOMETIMES gets set for 800x600 at 56 Hz, according to the display preference pane. I normally run at 1152x870 at 75 Hz. In the past, I have just used the "Detect Displays" command from the display preference pane. This always fixes the screen resolution and restores it to the correct setting.
This would not be a problem if I didn't have to run VNC. These screen res changes are crashing my VNC server. Here's what I do. I run a VNC server (OSXvnc is the name). I go away. Machine goes to sleep. From machine 'x' I send a wake-on-wan packet (a pain in the butt to figure out for me, BTW). My VNC Machine wakes up. I know it's awake, because I can login to it from remote, using SSH. But the screen res problem happened, and OSXvnc shuts down and won't reinitialize automatically. It says "Screen Resolution Changed - Server Reinitialized", and the "Start Server" button is waiting to be pressed. Of course, this cripples my ability to use VNC.
For what it's worth, this problem has happened with two different video cards. Granted, the first card was an ATI Radeon 9000 with 64 MB or VRAM and the second card is the same model with 128 MB VRAM. It's virtually the same card, but still, that's two different cards.
I have 2 CRT displays connected thru adapters (DVI-VGA and ADC-VGA) to the ATI. I'm running all the latest updates for Panther, according to Software Update. This problem has been with me since 10.2.3. I lived with it until it started really getting in the way (VNC crippling & such).
Any thoughts? -- iJW
G4 Dual 1 GHz MDD (no FW 800)   Mac OS X (10.3.9)  

One other item I just discovered. It seems that whether or not my monitors are powered on has something to do with it. When my monitors are on, the problem doesn't happen.
I like turning them off to save electricity. If I'm using the computer remotely, I already have a monitor. I don't need one powering up at my home that no one's looking at anyway. So the question still stands...
Anyone?
G4 Dual 1 GHz MDD (no FW 800)   Mac OS X (10.3.9)  

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