I have these 3 files logon.bat, logon.kix and the kix32.exe.
the content of the logon.bat is:
kix32.exe logon.kix.
The content of the logon.kix is:

use "g:" "\\server\everyone"

If InGroup("Finance")
use "h:" "\\server\Accounts"
EndIf

If InGroup("Plant")
use "i:" "\\server\Maintenance"
EndIf

Then i have place all these 3 files in the %systemroot%\Sysvol\sysvol\domain.com\scripts.
Then in group policy,under User Configuration, then windows settings then in Scripts(Logon), i have place all the 3 file s in there. But still not working.