I have the 889GL, and I can't get it to work on 800x480 with ANY video card.
I have tried 1 ati video cards, 2 nvidia ones, and on Dell generic (I think its intel). No luck at all running 800x480. I'v tried powerstrip, different drivers, different powerstrip settings. I have tried the suggested settings mady by on Xenarcs website and many others here.
Seems like no one has a Lilliput that displays 800x480 correctly.