怎么调整分辨率和切换控制台出错？

1.怎么改变分辨率？现在的分辨率是640X480吧，那字好大。:(:(
2.我切换控制台时，再回到X，不能显示桌面，只是看到象在控制台。
3.不能使用Ksnapshot.一用桌面就不动了。要到另一个控制台KILL。:(:(
4.怎么删除gnome and kde桌面环境?

这是我的X配置文件，请大家看看。

devel# cat XF86Config
Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/X11R6/lib/modules"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/simsun/"
EndSection
Section "Module"
Load "dbe"
Load "dri"
Load "extmod"
Load "glx"
Load "record"
Load "xtrap"
Load "speedo"
# Load "type1"
Load "xtt"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/sysmouse"
EndSection

Section "Monitor"
#DisplaySize 320 240 # mm
Identifier "Monitor0"
VendorName "HPC"
ModelName "1775"
Option "DPMS"
EndSection

Section "Device"
Identifier "Card0"
Driver "nv"
VendorName "nVidia Corporation"
BoardName "NV11 [GeForce2 MX/MX 400]"
BusID "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 8
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "800x600" "640x480"
EndSubSection
EndSection

devel#
请大家帮帮忙，谢谢。！

我的是
Section "Screen"
Identifier "scree0"
Device "RIVA TNT2"
Monitor "monitor0"
DefaultDepth 24
subsection "Display"
Depth 24
Modes "1024x768"
EndSubSection
不知道对你是否有帮助

谢谢，弄好了。原来关键不是在这里，是我的
HorizSync AND VerRefresh 没有设置，现在加上去了，就行了。

使用Ksnapshot.桌面就不动了。要到另一个控制台KILL整个X。
就这个问题了。

怎么把Ksnapshot.重新装一次?