You sound like a Novell user. I can relate (although I have been converted). So hear you go
There really isn't a "default" logon script for 2000. You can use policies to run script files at startup or shutdown of a computer or initiate script files for users at logon
The default location for computer scripts: This would have to be deployed through a local group policy on the local machine. (You would use the local group policy editor to deploy the policy.
C:\WINDOWS\System32\GroupPolicy\Machine\Scripts you have the option of saving the scripts in Startup or Shutdown
For Users
If you are running Active Directory. You can open the Active Directory Users and Computers tool...right click on the user you want to use a script... select the Profile tab from the properties sheet ...and enter the location of the script (\\servername\sharename\logonscrip) for the user in the Logon Script box. Make sure the user has the appropriate permission to read the script
The command to map drives is "net use" (i.e. net use F: \\computername\sharename...I recommend you do a quick help on it to get syntax (net use /?)
Hope this helps.