Activation De Blade Par Telephone Can I Uninstall GTA IV And Reinstall It Again With The Same Cd- And Activation-key?

Can I uninstall GTA IV and reinstall it again with the same cd- and activation-key? - activation de blade par telephone

I would like the format, but fear that, if only to remove GTA IV, I can not begin on the same CD key or activation after installation. Of course this will not affect or should I "off" manually?