It has a 800*600 from 56 to 72 or 75hz svga input according to my computeur videocard.
Otherwise, have a look in the service menu and you can see that the geometry settings are available in vga and svga mode.
I already tried with my computeur but I am limited to 4/3 dvds because it's one of the first model with a decoding mpeg2 card and not powerfull enough to manage a good software decoding. It doesn't anamorphoses or de-interlaces.
All I can say is that even interlaced it's far better than my Cambridge dvd 300 + QED rgb only scart to scart. The tv seems completly translucid, backgrounds are impressive, noise is absent and fluidity is there because of the lower refreshing frequency. The bad point is that the gama level seems rather cold but it might be fixed inside the tv or by the PC.
The last good point is that a scaler/de-interlacer PC only should not cost more than 200-300 £. It's not as plug and play as my cambridge, not very silent too, but the image should be awesome.
I'll let you know in a few weeks beause first I need to check around about mother boards, video cards, hd etc... software is free :
http://deinterlace.sourceforge.net/