2 monitors 2 video cards extend desktop

Question

I recently installed Xubuntu (I am mostly a windows user who is trying to migrate), I have a dedicated Nvidia GTX460 video card and an integrated Intel HD 4000 (in the ivy bridge cpu), i have the first monitor connected to the Nvidia card and the second to the mainboard (ergo to the integrated gpu). By default first monitor is displaying content and the second stays blank or ends up showing terminal. I did fiddle with the settings for over 2 days now without much success so i decided i might need some help settings this up.

With my xorg.conf below both displays show desktop but i cant drag the windows across them

Section "ServerLayout"
    Identifier     "Default Layout"
    Screen         0  "Screen0"
    Screen         1  "Screen1" RightOf "Screen0"
EndSection

Section "Device"
    Identifier     "Device0"
    BusID          "PCI:1:0:0"
    Driver         "nouveau"
    VendorName     "Nvidia Corporation"
EndSection

Section "Device"
    Identifier     "Device1"
    BusID          "PCI:0:2:0"
    Driver         "intel"
    VendorName     "Intel Corporation"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

I tried both the nouveau driver and nvidia proprietary drivers with not much change, all i am trying to do is to extend monitor0 with monitor1 (like i have it in windows)

Any help would be appreciated.

Thanks