Although I think it must be possible to specify it somewhere in some configuration file (my guess is somewhere in the samba configuration files).
Found a better solution! Login to your console and issue the following statements:
mkdir -p /etc/e-smith/templates-custom/etc/smb.conf
pico 11logonDrive
Enter the following line in the file to set h: as the default home drive:
logon drive = h:
Press Ctrl-X and answer yes to save it, and enter to confirm the filename.
Apply the new settings to the configuration file
expand-template /etc/smb.conf
Restart Samba
/etc/rc1.d/K35smb restart
Be sure that no other options for the chosen drive are set in the netlogon.bat file and try to logon on a Windows PC and see if it worked the way you would like.