PhdbaseIII is an old product, no longer being developed, but still available from
www.hallogram.com.
It gives really excellent indexed full-text facilities under VFP5 and FPW26. I've used it under VFP6 and (since yesterday!) under VFP7 as well.
I suspect you may have reliability problems if there's a lot of multi-user updating of your searchable data under VFP7, but if you're searching a fairly static snapshot it should work.
Lets hope this functionality will appear in VFP8.
John
Dr. JW Faithfull
Curator in Geology
Hunterian Museum
University of Glasgow
Glasgow G12 8QQ
Scotland