Looks like you are upgrading from the classic controls to the new suite, in which case this help article:
will give you the info you need in order to upgrade from the older grid control to the new suite. For any other controls you should be able to find either a "Migrating..." or a "Changes and Backwards Compatibility" section in the online help with instructions on upgrading.
Also, you can consult this kb article
for info on how to upgrade to the newer Classic control suite if you choose to take that route instead.