There are two options for updating Sednterp 1.01 through 1.08 to 
version 1.09:

1) Obtain a copy of SDNUPDAT.EXE, which is a self-extracting archive 
that contains only the new files.  When you execute this program, it 
will prompt you to input the directory where Sednterp was previously 
installed (usually c:\sednterp).  It will then overwrite files 
from the old version which require updating.

2) Do an entire re-install by downloading SDTR0601.exe and executing 
it.  If you use this method, you will NOT want to overwrite your 
existing databases (sednterp.mdb and phyconst.mdb), or you will lose 
any information you have added or modified.  To be safe, I 
recommend that you make a back-up copy of those files before the 
re-install operation.