Settings to Optimize Performance
WARNING: This article contains information about editing the registry. Before you edit the registry, you should first make a backup copy of the registry files (System.dat and User.dat). Both are hidden files in the Windows folder. Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows. Use Registry Editor at your own risk.

Running Scandisk on Boot Up (Windows 9x)
If Windows 9x is shutdown incorrectly, or the turn power turned off without shuting down, the system will attempt to run Scandisk on the next boot. You can control whether Scandisk doesn't run, prompts whether to run, or runs automatically. 
1. Change the attributes for MSDOS.SYS so it is not 'Read Only', MSDOS.SYS is found in the root directory of your C:\ drive. Open the file using Notepad or another text editor (not Microsoft Word or any word processor). 
2. Change the value of 'AutoScan=' to: AutoScan=0 : Scandisk is Disabled AutoScan=1 : Scandisk Prompts First AutoScan=2 : Scandisk Runs Automatically 
3. Changes will take place on the next reboot. 
Note: It is advisable to run Scandisk after an incorrect shutdown to avoid file corruption.
Note: This feature is only available on Windows 95 OSR 2 and greater. 
Registry Settings:
Key: [MSDOS.SYS]
Data: AutoScan=1 (default)

Increase Network Performance (Windows NT)
If you increase the number of buffers that the redirector reservers for network performance, it may increase your network throughput. Each extra execution thread that you configure will take 1k of additional nonpaged pool memory, but only if your applications actually use them. 
To configure additional buffers and threads, edit: 
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanWorkstation\Parameters 
Modify or Add Value of type REG_DWORD for: 
'MaxCmds' The range is 0 - 255 and the default is 15 
'MaxThreads' Set it to the same value as MaxCmds 
You may also want to increase the value of 'MaxCollectionCount'. This REG_DWORD is the buffer for character-mode named pipes writes. The default is 16 and the range is 0 - 65535. 
Registry Settings:
Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters]
Data Type: REG_DWORD