yes this can be done first you create a bat file that looks like the one below on the machine that will be backed up
@echo off
c:\PVSW\Bin\BUTIL.EXE -startbu @D:\rhombus\data\mkdfiles.lst
if errorlevel 0 goto end
echo files not put into continuous mode try again
:end
echo all files were put into continuous mode ok
after you have done this and changed the script to match the location of your data files create a file called mkdfiles.lst or whatever you want to call it and in that file list all the files that you want to backup for example
\\server name\sharename$\DATA\ACT.MKD
\\server name\sharename$\DATA\BOM.MKD
you need to create a second script to run after the backup as below
@echo off
c:\PVSW\Bin\BUTIL.EXE -endbu @d:\rhombus\data\mkdfiles.lst
if errorlevel 0 goto end
echo files not put into normal mode try again
:end
echo all were files were put into normal mode ok
this works by having the first script called via tsm client to put the database into a sort of offline mode each data file has a new file created for it datfilename.^^^ all changes and deletes are kept in this .^^^ file, you can now backup the normal .mkd file. Then the second script copies the changes held in the .^^^ back to the .mkd file and deletes the .^^^ file (need to put an entry in dsm.opt to stop it trying trying to backup the .^^^ file)
If you are using a version above 8 I think there is also an online backup utility which saves you writing the scripts, but it works in the same way.