I'll try to point you in the right direction.
Install Guide into the C: drive. - C:\Guide\ (might be there already)
create a folder on "C" drive and name it UCAC4, install all UCAC4 files (z001 to z900) in this folder, nothing else - i.e C:\UCAC4\ z001 and on.
Open Guide, press keyboard keys "ALT+J" and enter "UCAC4_PATH:C:\UCAC4", then OK
Set Guide to a field of 10 degree and set star magnitude to show 10 mag.
Go to Toggle user datasets and select UCAC4, set to "auto", set mag to 10, set field from 0 to 1.5, select Label "on". Done

Zoom in to 1 degree field and all UCAC4 labels will come on. If labels are shown, you are good, modify your settings as required.



Denis

Thanks for help so far but still unable to access UCAC4 data. Any specifics as to;

- any updates to 9.1 

- where it is best to store data

- pointer to data in tdf

- field size to display data

- etc

would be helpful.

Regards