trying to change my monitor's resolution

[Albretch]

Hi,
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I am trying to change my monitor's resolution to 1024x768. THis is the command line with which I am starting knoppix:
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Kernel command line: ramdisk_size=100000 init=/etc/init lang=us apm=power-off vga=791 initrd=minirt.gz nomce loglevel=0 quiet BOOT_IMAGE=knoppix BOOT_IMAGE=linux init 2 bootfrom=/dev/hda2/knpx_5.1.1.iso scren=1024x768 dma acpi=off noapic
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monitor still looks the same.
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The particular box is an old IBM NetVista with 1 Gb of RAM
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The sections of this box' dmesg output that relate to the video card are:
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EISA bus registered
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Console: colour VGA+ 80x60 (which is startup video option '6')
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Boot video device is 0000:00:02.0
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Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 845G Chipset.
agpgart: Detected 892K stolen memory.
agpgart: AGP aperture is 128M @ 0x88000000
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How could I change my monitor's resolution?
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Thanks
lbrtchx