Index files

[Janice Coventry, Walter and Eliza Hall Institute]

Hello
Is it possible to have the index files spread over two different 
directories as our current disk is filling up.
Thanks in advance
Janice
================================================================================
Janice Coventry
The Walter and Eliza Hall Institute of Medical Research,
P.O. Royal Melbourne Hospital, Victoria, 3050, Australia.
Phone: International +61-3-9345-2564   FAX: International +61-3-9347-0852
            National 03-9345-2564                   National 03-9347-0852
Email:  janice at wehi.edu.au
===============================================================================