Restore point in Vista

Problem: How to manage Restore point in Vista

1.
if there is message:
Restore point creation disabled by Group Policy

then go to regedit,
HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\WindowsNT\SystemRestore\DisableSR
and
delete:
Disable Config

2.
to manage restore space,
go to command prompt, type:
vssadmin resize shadowstorage /for=c: /on=c: /maxsize=1.5GB
check storage space with command:

vssadmin list shadowstorage


(thanks to Zeljko)