Auto map network drives on login for all users

1. Save the following batch file to the domain controller's NETLOGON share as logon.bat:
   @echo off
   net use * /delete /yes
   net use x: \\server_name\shared_directory_name
2. Active Directory Users and Computers
3. Right click domain name at top left and click Properties > Group Policy > Edit > User Configuration > Windows Settings > Scripts (Logon/Logoff) > Logon > Add…
4. Enter path to logon.bat (e.g., \\ACME.local\sysvol\ACME.local\scripts\logon.bat) and click OK three times
5. Login from workstation. Drive x: should appear in My Computer.

Auto map network drives on login for certain users:

1. Save the following batch file to the domain controller's NETLOGON share as logon.bat:
   @echo off
   net use * /delete /yes
   net use x: \\file_server_name\shared_directory_name
2. Active Directory Users and Computers > Users > Double click user > Profile
3. Enter "logon.bat" (no quotes) in the "Logon script" box and click OK
4. Login from workstation as user modified in step 2. Drive x: should appear in My Computer.

Auto map network drives on login based on Group membership

1. Get KiXtart
2. Put WKIX32.EXE in both the domain controller's NETLOGON share and %SystemRoot% (normally C:\WINNT\).
3. Save the following script as map_drive.kx to the NETLOGON share (be sure to change the group as needed – here we've used Domain Users):
   use "*" /DELETE
   if ingroup("Domain Users")
   use x: "\\server_name\share_name"
   endif
4. Save the following batch file (which calls your KiXtart script) as login.bat to the domain controller's NETLOGON share:
   @echo off
   \\server_name\NETLOGON\WKIX32.EXE \\server_name\NETLOGON\map_drive.kx
5. Active Directory Users and Computers
6. Right click domain name at top left and click Properties > Group Policy > Edit > User Configuration > Windows Settings > Scripts (Logon/Logoff) > Logon > Add…
7. Enter path to login.bat (e.g., \\ACME.local\sysvol\ACME.local\scripts\login.bat) and click OK three times
8. Login from workstation as a user belonging to group designated in map_drive.kx. Drive x: should appear in My Computer.
9. If x: does not appear, check the permissions of NETLOGON, WKIX32.EXE, your script files, etc. Also, make sure that the user or group has the necessary permissions on the shared folder you are mapping.

More KiXtart Examples

1. Map drive if user is *not* a member of a certain group (in this case, "Students"):

   If InGroup("Students") = 0
      Use R: "\\server\records"
   EndIf
   

2. Using Boolean operators:

   If InGroup("Teachers") Or InGroup("Office") Or InGroup("PTA")
      Use G: "\\server\Grownup_Files"
   EndIf
   
   If InGroup("2008 Class") And InGroup("Honors")
      Use S: "\\server\smart_kids"
   EndIf
   

3. Using Select…EndSelect (stops processing on the first true Case)

   Select
      Case InGroup("Students")
         Use S: "\\server\student_storage"
      Case InGroup("Office")
         Use O: "\\server\office_docs"
         Use R: "\\server\records"
      Case InGroup("Teachers")
         Use O: "\\server\office_docs"
         Use S: "\\server\student_storage"
         Use T: "\\server\teaching_materials"
   EndSelect
   

Source: http://tinyapps.org/docs/auto_map_network_drives.html