How i can install any language for example Hebrew in Windows 7 Professional ?
Only the Ultimate and Enterprise edition support changing the language through the control panel.
Vistalizator provides the same functionality and supports all editions of Windows Vista and Windows 7.
You can download from windows update the MUI of your choice and install it. Links poining to windows update are available at http://www.froggie.sk/7lp64sp1.html for Windows 7 SP1 64 bits (other versions are one this website).
I think that is an Ultimate feature - not in Pro.