When I checked in AVISynth, it was marked as progressive; but when I check the field order in VDM, it turns out to be Bottom Field First.
Is that good? I recall reading on one of the how-to guides that it was a disadvantage.

So I use Telecide (Bear in mind that I don't have a clue whether my file is PAL or NTSC or whatever) and whenever I try to check it works in VDM, the same thing keeps coming up:
Telecide: YUY2 or YV12 data only.
So here's my present script:
mpeg2source("C:\Documents and Settings\user\My Documents\My Videos\AMV\Bvd2.d2v")
LanczosResize(640,480)
ConvertToRGB32()
ComplementParity()
Telecide(order=0)
Decimate(cycle=5,mode=3,threshold=1.0)
Jeez this stuff makes my head hurt. Help, please?