I've tried to play with GuildWars (Factions) on my Linux box.
The game begin with no problems. When it going to start the game window disappear.
Lunching it from shell I got this:
[giacomo@crysalis Guild Wars]$ wine Gw.exe 
fixme:win:EnumDisplayDevicesW ((null),0,0x34f06c,0x00000000), stub!
fixme:d3d:IWineD3DImpl_CheckDeviceMultiSampleType Quality levels unsupported at present
fixme:imm:ImmGetIMEFileNameA (0x4090409, 0x790782c8, 260): stub
fixme:d3d:IWineD3DDeviceImpl_SetDialogBoxMode (0x143310) Dialogs cannot be disabled yet
fixme:d3d:IWineD3DResourceImpl_SetPriority (0x2f10970) : stub
fixme:d3d:IWineD3DResourceImpl_SetPriority (0x192c20) : stub
fixme:d3d:IWineD3DResourceImpl_SetPriority (0x2c00740) : stub
fixme:d3d:IWineD3DDeviceImpl_SetDialogBoxMode (0x143310) Dialogs cannot be disabled yet
fixme:d3d:IWineD3DResourceImpl_SetPriority (0x2f100e0) : stub
fixme:d3d:IWineD3DResourceImpl_SetPriority (0x2c00618) : stub
fixme:d3d:IWineD3DResourceImpl_SetPriority (0x2f10970) : stub
Mesa 7.0.2 implementation error: i915_program_error: Exceeded max temporary reg
Please report at bugzilla.freedesktop.org
DRM_I830_CMDBUFFER: -22
[giacomo@crysalis Guild Wars]$ 

I've a laptop with an Intel 945GM as video card:
[root@crysalis ~]# lspci | grep Graphi
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
[root@crysalis ~]# 

I use the driver bundled with the distribution, but, I guess, they are the lastest. I also send you my xorg.conf file. I hope this can help.

---------------------- xorg.conf ----------------------
Section "ServerLayout"
        Identifier     "single head configuration"
        Screen      0  "Screen0" 0 0
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

#Section "Module"
#       Load "glx"
#       Load "dri"
#EndSection

Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "it"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        ModelName    "LCD Panel 1280x800"
        HorizSync    31.5 - 50.0
        VertRefresh  56.0 - 65.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "intel"
#       Option      "RenderAccel" "true"
#       Option      "AllowGLXWithComposite" "true"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
EndSection

#Section "DRI"
#       Mode         0666
#EndSection

#Section "Extensions"
#       Option  "Composite" "Enable"
#EndSection
---------------------- xorg.conf ----------------------

Best regards
Giacomo Succi