Jatin, this is not a cell-phone instant-messaging site. It is a good idea to not write so "cute," and spell out words, use proper punctuation, letter-casing, etc.
VB6 had a built-in ability to store data in the registry, and to retrieve it, but the keys you could get at were limited.
VB.NET 05 has the My.Computer.Registry object which exposes 7 read-only properties, each exposing one of the Microsoft.Win32.RegistryKey object corresponding to one of the registry hives.
I believe these RegistryKey objects can be used to either read or write.
If this is so, no APIs required...