Must Have Tools (Free)
I have some files that for me its important especially when ur computer was attacked by a virus. this 12 tools is free to use.
List of files :
1. Autoruns : This utility, which has the most comprehensive knowledge of auto-starting locations of any startup monitor (A starting list of auto-run locations was obtained from David Solomon's "Windows Internals" seminar), shows you what programs are configured to run during system bootup or login, and shows you the entries in the order Windows processes them. These programs include ones in your startup folder, Run, RunOnce, and other Registry keys. A "Hide Signed Microsoft Entries" option helps you to zoom in on third-party auto-starting images that have been added to your system.

2. FreeCommander version 2008.06c : i think you know what it is....

3. Process Explorer : Process Explorer is an advanced process management utility that picks up where Task Manager leaves off. It will show you detailed information about a process including its icon, command-line, full image path, memory statistics, user account, security attributes, and more. When you zoom in on a particular process you can list the DLLs it has loaded or the operating system resource handles it has open. A search capability enables you to track down a process that has a resource opened, such as a file, directory or Registry key, or to view the list of processes that have a DLL loaded.

4. Process Master 1.1 : An advanced utility for hidden processes detection and killing. It successfully detects the presence of such famous rootkits as hackerDefender and Fu. Recommended for advanced users.

5. Run : same a windows flags+R. utility to run a program

6. Runscanner : is a completely free windows system utility which scans your system for all configured running programs. You can use runscanner to detect autostart programs, spyware, adware, homepage hijackers, unverified drivers and other problems.

7. GS : Greg's Command Shell

8. isReset : A free tool to reset file/folders attributes

9. NoAutoRun : registry for no autorun

10. Regalyz : Advanced Registry Editor

11. SRT : A free tool to remove Sohanad virus and friends!

12. Tasklist : task list operation

Download Links : 12 Must Have Tools