dell 710m 1280x800 resolution

This is on my gentoo laptop.

*  sys-apps/855resolution
      Latest version available: 0.4
      Latest version installed: 0.4
      Size of files: 6 kB
      Homepage:      http://perso.wanadoo.fr/apoirier
      Description:   Utility to patch VBIOS of Intel 855 / 865 / 915 chipsets.
      License:       public-domain as-is

*  x11-drivers/xf86-video-i810
      Latest version available: 1.6.5
      Latest version installed: 1.6.5
      Size of files: 429 kB
      Homepage:      http://xorg.freedesktop.org/
      Description:   X.Org driver for Intel cards
      License:       xf86-video-i810


$ cat /etc/conf.d/855resolution
...
replace[0]="5c"
with[0]="1280 800"
...
$ rc-update -a 855resolution default