1) %windir%\system32\config (for example, C:\WINNT\SYSTEM32\CONFIG)
2) Try this Technet article, "How to Use %LOGONSERVER% to Distribute User Profiles (Q141714):
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q141714
3) don't understand question.Sorry.
4) Registry tweak:
Hive: HKEY_CURRENT_USER
Key: Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
Name: NoDrives
Type: REG_DWORD
Value: To calculate the value, add together the numbers for the drives you want tohide, using the formula: A=1, B=2, C=4, D=8, E=16, F=32, G=64, and so forth. To hide D: & E:, the value would be 8+16=24.
5) I hate using POLEDIT. Sorry.
6) Another Registry tweak:
Key: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\
CurrentVersion\Winlogon]
Value Name: DisableCAD
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = Require Ctrl+Alt+Delete, 1 = Disable)
7) Please read Technet article "Limiting a User's Concurrent Connections in Windows 2000 and Windows NT 4.0 (Q237282):
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q237282
hope this helps