have you lost your winrar password so here is A solution

system requiment 

There is no special requirment  it can work on windows 98/xp/vista/windows7

so here is password cracker so that   you can use  crack your importnat winrar passwords 

PASSWORD CRACKER

CRACK YOUR ADMINISTATOR PASSWORD

DO YOU WANT TO CRACK  MAC NOTEBOOK ADMINISTRATOR PASSWORD

TRY THIS  OUT

 Note: For information about resetting a password in Mac OS X v10.2.8 or earlier, see the Additional Information section below.
Log in with an administrator account. Tip: If you don't know the password of any administrator accounts, see "Resetting the original administrator account password" below.
From the Apple menu choose System Preferences.
From the View menu choose Accounts.
Click the lock button if it appears locked; enter the administrator password.
Select the username whose password you want to change.
Click the Reset Password button (Mac OS X v10.3 and v10.4) or the Change Password button (Mac OS X v10.5 or later).
Enter a new password in both the Password and Verify fields, and add a hint if desired.
Click the Reset Password button (Mac OS X v10.3 and v10.4) or the Change Password button (Mac OS X v10.5 or later).
If a dialog box appears with the message "Your Keychain password will be changed to your new account password," click OK.

to crack the administatorNote: For information about resetting a password in Mac OS X v10.2.8 or earlier, see the Additional Information section below.
Log in with an administrator account. Tip: If you don't know the password of any administrator accounts, see "Resetting the original administrator account password" below.
From the Apple menu choose System Preferences.
From the View menu choose Accounts.
Click the lock button if it appears locked; enter the administrator password.
Select the username whose password you want to change.
Click the Reset Password button (Mac OS X v10.3 and v10.4) or the Change Password button (Mac OS X v10.5 or later).
Enter a new password in both the Password and Verify fields, and add a hint if desired.
Click the Reset Password button (Mac OS X v10.3 and v10.4) or the Change Password button (Mac OS X v10.5 or later).
If a dialog box appears with the message "Your Keychain password will be changed to your new account password," click OK.

TO CRACK THE ADMINISTATOR PASSWORD

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