>1. with my appl setup i want to make registry entries. how to do that ???? will i have to use InstallShield or any other way is there.

You can modify the setup1.vbp (which is the source code of the PDW installation kit) to fits your need.

>2. I want to parameterized my DSN instead of hard coding in my application so that if i change the database password i dont have to make the set up again....
>how to do that ????

From the archives-FAQ, read "Create a DSN from a VB application" (ID=782). You can have a .INI file that contains everything you need to re-create the DSN (encrypted is even better).