I don't know but if you dont have 1 mb data to store maybe u can think to use that function, habitually I use that to store some value for my setting programm. like save my last form position when is closed...and next time it will load at the same pos
Microsoft said this
In Windows NT, the value is stored to a registry key.
In Windows 3.x, the value is stored in the WIN.INI file.
In Windows 95/98, the value is stored in a cached version of WIN.INI.
it works like registry...key and value