I got a working solution now using the lightwave TGSExport plugin, rendering now. The script is designed for TG 0.9x so there is a little inconsistency but as long as I stay close to the origin (0,0,0) it seems to work.
I had to get some help, a little script from a friendly chap over at the Excel help forum, StephenR. I run this on the imported TGS script, swaped some of the columns about and changed some of the column values positive to negative (multiplied the entire column by -1), add in the FoV column and coppied out all the cells into a text doc and saved as a .chan file. Job done, well I'll find out in the morning lol.
Terragens fast enough now to make this actually worth doing, I err hope
Richard
ps Filemaker looks interesting I'll have to give it a go sometime