ARP to get the MAC address

PING to see if your OSI stack is working

PATHPING similar to PING and TRACERT

TRACERT to see packet route to the destination

ROUTE PRINT displays the routing tables

IPCONFIG to view server IP numbers

DXDIAG to get DirectX information

EXPAND to expand one or more compressed files

FTP to open the file transfer protocol program

MEM to view memory

MMC to bring up the Microsoft Management Console

NSLOOKUP to get the IP address of a server

OSK to get the On-Screen Keyboard

REGEDIT to get the registry editor

SFC Scans all protected system files and replaces incorrect versions.

MSCONFIG brings up the processes and programs that start automatically

SYSEDIT brings up the Systems Configuration Editor

SYSTEMINFO brings up the Computer's System Information

TASKMGR brings up the Task Manager

MSINFO32 brings up information about your computer

FTP file transfer protocol allows you to upload/download files from FTP server

TELNET allows you to remote via a command prompt to another computer