DAO350.dll, DAO360.dll and Crystal

I have VB6 with SP3, SQL7 and Crystall7 installed on my machine. Crystal didn't work with Access 2000 db neither through VB using Crystal Control nor in Crystal environment. With Access 97 everything was fine. I installed Crystal maintenance release. Now it works in its environment, but doesn't through VB. If I change reference from DAO350.dll to DAO360.dll it starts to work with Access 97 db. What is the difference between these dll's. Are there any pitfalls with VB and Access 97? Do I thoroughly have to test my project or it must work the same with DAO360.dll as it does with DAO350.dll?
Thank you
Vlad