Second Monitor not detected with Radeon HD 7770?

[cddb]

Hi, I just upgraded my Dell Studio XPS 435mt's video card from the original included card to a Radeon HD 7770.

I installed the card, drivers and software included, rebooted, etc, and everything seems fine; except for one thing: the second monitor I use isn't being detected.

My primary monitor is an HP 2009m.
I'm not sure what type the second monitor is, it's an older Dell which uses a little adapter for the pin connection (this was needed on the old card as well as the new one)

the Radeon HD7770 card takes up two PCI slots; I have my primary monitor plugged into the top slot and the second monitor on the bottom slot. Windows and the Catalyst Control Center both cannot detect that the 2nd monitor is plugged in.

Do I need to do something involving disabling onboard graphics settings in the BIOS? If so, what exactly do I need to do..?
Any help would be greatly appreciated!

Thanks

 

[littleleo]

I'm not sure what the ports on your video card are, but ff your using a DVI to VGA adapter on a DVI-D port it won't work since your DVI-D is digital and a VGA is Analog.

 

[cddb]

Thank you for the response. I believe that is in fact the problem.

Looks like what's needed is one of these thingies?
http://www.amazon.com/HP-Displayport-VGA-Adapter-AS615AA/dp/B0025ZUF8K

Thanks