If I understood this correctly, this is for use during logon in the logon script, isn't it?
If the users have only list access to \\server\users, I do not think this works
Code:

$Directory="\\server\users\"+@USERID
If Not Exist ($Directory)
	MD $Directory
	Shell "%COMSPEC% /c Echo Y| Cacls \\server\users\"+@USERID+" /e /c /g "+@DOMAIN+\+@USERID+":F"
EndIf