Ah, this is the right forum. The Acrobat SDK isn't a separate thing you use or don't use. The SDK (Software Development Kit) is just information that developers need to work with Acrobat (and Adobe Reader). It's mostly documentation; a few samples (not the sort to copy/paste as complete projects); header files and so on.
Acrobat/Reader have several controls and you need the documentation; you won't find what you need by guesswork. They are all pretty limited, the heavy guns in the SDK are JavaScript and plug-ins. They are described in the section called Interapplication Communication (IAC). It's very strongly recommended to use ONLY what you find in the documentation; anything else you discover in object browsers etc. could leave you in trouble.
AxAcroPDF - available with Acrobat and Reader - has no FInd method. AcroExch - available with Acrobat only - offers a lot more facilities.
