Problems with lower resolutions

I have a notebook with a NeoMagic 2160 and an 800x600 LCD.
I've been trying to get modes like 400x300 and 320x240 to work properly
streched, but I can't seem to make them work with the neomagic driver. 
Using the vesa driver they work fine, but when I use the neomagic driver
all modes below 640x480 will either show up streched vertically and not
horizontally, or just not show up at all.  Does anyone know of a way I
could get them to work with the neomagic driver?

-- 
Reeve the cat
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