Little problem with screen resolution

Hello to everybody, i have installed sucessfully FreeBSD 7.0 AMD64... but i still have some problems with the screen resoution.

X and XFCE are running but the screen looks curved at the sides, using 800x600@60 looks well but big, 1024x768@70 looks curved.

I try Xorg -configure, similar to X11 Configuration, and copied the file to /etc/X11.

My motherboard is Gigabyte GA-M61SME-S2 Rev. 2002 (S-Series) socket AM2
chipset nVidia GeForce 6100/NForce 405

i dont have the HSync nor VSync of my monitor, only the frec. (50-60 Hz), is an BTC CRT model KM-511 and i haven't found any specs for this monitor.

Im not interested on high resolutions, my monitor isn't HD, im only want a general/comon conf to work (1024x768@60)

my xorg.conf is:

Code:

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	RgbPath      "/usr/local/share/X11/rgb"
	ModulePath   "/usr/local/lib/xorg/modules"
	FontPath     "/usr/local/lib/X11/fonts/misc/"
	FontPath     "/usr/local/lib/X11/fonts/TTF/"
	FontPath     "/usr/local/lib/X11/fonts/OTF"
	FontPath     "/usr/local/lib/X11/fonts/Type1/"
	FontPath     "/usr/local/lib/X11/fonts/100dpi/"
	FontPath     "/usr/local/lib/X11/fonts/75dpi/"
EndSection

Section "Module"
	Load  "GLcore"
	Load  "dbe"
	Load  "dri"
	Load  "extmod"
	Load  "glx"
	Load  "record"
	Load  "xtrap"
	Load  "freetype"
	Load  "type1"
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/sysmouse"
	Option	    "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
        #ModeLine    "1024x768" 60
        HorizSync    30-70
        VertRefresh  50-160
        Option       "DPMS"
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option     "SWcursor"           	# [<bool>]
        #Option     "HWcursor"           	# [<bool>]
        #Option     "NoAccel"            	# [<bool>]
        #Option     "ShadowFB"           	# [<bool>]
        #Option     "UseFBDev"           	# [<bool>]
        #Option     "Rotate"             	# [<str>]
        #Option     "VideoKey"           	# <i>
        #Option     "FlatPanel"          	# [<bool>]
        #Option     "FPDither"           	# [<bool>]
        #Option     "CrtcNumber"         	# <i>
        #Option     "FPScale"            	# [<bool>]
        #Option     "FPTweak"            	# <i>
        #Option     "DualHead"           	# [<bool>]
	Identifier  "Card0"
	Driver      "nv"
	VendorName  "nVidia Corporation"
	BoardName   "GeForce 6100 nForce 405"
	BusID       "PCI:0:13:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
        DefaultDepth 24 
	#SubSection "Display"
	#	Viewport   0 0
	#	Depth     1
	#EndSubSection
	#SubSection "Display"
	#	Viewport   0 0
	#	Depth     4
	#EndSubSection
	#SubSection "Display"
	#	Viewport   0 0
	#	Depth     8
	#EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
                Modes "1024x768" "800x600"
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth      16
                Modes      "1024x768" "800x600"
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth      24
                Modes      "1024x768" "800x600"
	EndSubSection
EndSection

I try some values (guiding me with the handbook) adding them like on linux.

Thanks to everybody

See you