Dual Monitor Help

Was messing around today and decided to use an old 18" Dell CRT (M992) in a dual-monitor setup with my new 20" Viewsonic LCD (Maybe this combo isnt possible, if so no need to read on =P)

Specs:
Asus A8N SLI Deluxe
FX-55 @ 3.2
2x 1gig Corsair XMS
1 250gig sata WD Cavair
2 250gig sata WD Cavair RAID 0
Audigy 2zs

and an XFX 7800gtx, (Dual DVI)

My existing LCD, (Viewsonic 20" ) is in the left port if your looking at the comp from the back. I assume that is for your main monitor just because that would be common sense. Anyway I had no problems installing the CRT, I downloaded the drivers from dell.com, and it is properly installed / recognized.

Then I go to my Display Properties > Settings tab and it shows both monitors. I enabled "Extend windows Desktop", and in the advanced tab for my G-card tried all the options, Clone / horizontal / vertical / Dual View. Restarting after each, but I just get a nice black screen on my CRT.

*NOTE* It had been working a week ago when I dismantled our rec room computer to put mine up since im back from school. But I will try it again on my other system after I post this.

If anyone sees a step I left out, or knows something I may have overlooked like setting the monitors to the same rezolution (will try that right now) any and all help is greatly appreciated =).

Thanks

Have you tried switching the sockets and running the CRT alone and used both video socket? If so maybe it could be the CRT problem.

Hmm, monitor works fine, tried switching sockets, and the refresh rate is set at 60hz, but still black.

I just tried adjusting the color settings on it though and it said that it was in "power Save mode" and to access it using the computer. How do I get it out of power save mode?

Also the problem maybe that windows doesn't support it as a secondary display, I googledl my problem and some people said that it is a possibility. I don't know were to find a list of supported ones though (if there is one).

I believe my mobo came with a PCI monitor card I never installed, is that what your talking about?

Have you tried switching the resolutions? Maybe the CRT and LCD have different native resolutions, so try adjusting it. Try running both at the same time with 1024x768 @ 60Hz or 1280x1024 @ 60hz, you know it could be that and the graphics is only set to one setting and can only run one resolution and frequency at a time. So try that and see if it fix the problem.

WORKING!!!! haha, thanks for all your support guys, I musta smashed my VGA cable or something taking apart the computer this CRT used to be connected to because I replaced it with an old one I had laying around and Its working like a charm now .


Again I appreciate all the advice, I learn something new with every post I read around here