ATI 1950GT and HD4350HD on the same system?

I'm not sure if this is the right place to post this...so sorry if its not.

For some time I've been using an x1950gt with 2 monitors with no problem. I wanted to be able to use HDMI to connect to my 1080p TV as well so I picked up the 4350. I have both of these installed in my machine but I seem to only be able to have drivers working for one.

If i install the 1950gt drivers first and then the 4350, after reboot the 4350 works perfect but my 1950 wouldn't start (Error code 10 in device manager..~"This device could not start").

Any advice?

Thanks for the help!