Add a `vga=` and then the value below as a kernel parameter (at the end of `kernel`) in `/boot/grub/menu.lst`. These values have been variously gathered from across the interwebs.

## Table that works for me

Tried `0x305` on a 4:3 LCD display.

        | 640x480 800x600 1024x768 1280x1024
    ----+-------------------------------------
    256 | 0x301   0x303   0x305   0x307
    32k | 0x310   0x313   0x316   0x319
    64k | 0x311   0x314   0x317   0x31A
    16M | 0x312   0x315   0x318   0x31B

## Another (long) table

`0x361` works for me on a widescreen laptop.

    80x25 (TEXT)  3840  0xF00
    80x50 (TEXT)  3841  0xF01
    80x43 (TEXT)  3842  0xF02
    80x28 (TEXT)  3843  0xF03
    80x30 (TEXT)  3845  0xF05
    80x34 (TEXT)  3846  0xF06
    80x60 (TEXT)  3847  0xF07

    320x200x8     816   0x330
    320x200x16    782   0x30E
    320x200x24    783   0x30F

    320x240x8     820   0x334
    320x240x16    821   0x335
    320x240x24    822   0x336

    320x400x8     817   0x331
    320x400x16    818   0x332
    320x400x24    819   0x333

    640x400x8     768   0x300
    640x400x16    829   0x33d
    640x400x24    830   0x33e

    640x480x8     769   0x301
    640x480x16    785   0x311
    640x480x24    786   0x312

    768x480x8     866   0x362
    768x480x16    ???   ????
    768x480x24    ???   ????

    800x600x8     771   0x303
    800x600x16    788   0x314
    800x600x24    789   0x315

    1024x768x8    773   0x305
    1024x768x16   791   0x317
    1024x768x24   792   0x318

    1280x800x8    864   0x360
    1280x800x16   ???   ????
    1280x800x24   865   0x361

    1280x1024x8   775   0x307
    1280x1024x16  794   0x31a
    1280x1024x24  795   0x31b

    1440x900x8    868   0x364
    1440x900x16   ???   ????
    1440x900x24   869   0x365

    1600x1200x8   796   0x372
    1600x1200x16  798   0x374
    1600x1200x24  799   0x375