You can change the passphrase prompt that users see in the Passphrase Setup dialog box the first time they log in.
Launch the Administrative Management utility (SLManager or MMC snap-ins).
Click Advanced Settings. The Advanced Settings options are displayed.
Under Customized Passphrase Prompt, select Modify the passphrase prompt window text. The Custom prompt is now active.
Specify the new prompt.
Click OK to save the changes and close the Administrative Management utility. Log in as a new user to view the customized prompt.