I have tried, but I just culd not find a way to sort the SEARCH output by a formfield. I used order="formfield(fieldname)" it does not seems to work.
I have the same problem, and I'm also curious how the ordering would work if it did work - I was trying to order on a numeric formfield and hoping TWiki would get it right. Instead, it's ignoring me and listing by last revised.
This has been implemented in mid Feb 2002, you probably need to get the latest Alpha or Beta. Test of
to pre-sort the table.