VB 6 /Crystal report 7/SQL 2000 Problem

I am updating a program using VB6/CrystalReport 7/SQL server 2000 and delopy via PDW to NT and XP PCs. It is running fine on my machine but report portion doesn't work in some enduser machines.

If I install BOTH Crystal report 7 and SQL server 2000 client and remove both but keeping all dll files on the enduser machine, the reports will run fine.

I have included all dlls I believed needed into the package. It seems that some dlls are outdated or missing in my package. Anyone can give me some advises? what is the dll for native connection in CR? Could it has problem to support SQL server 2000?

Thanks very much.