Migration to Oracle Designer 6i

Hi everyone,

We have oracle Designer 6i installed Windows NT 4. Now we want to move to Oracle Designer 6i on Windows 2000 box, becase we are unable to install Designer 6 on Windows 2000 SP4.

My question is,
1. has any one installed Designer 6i on Window 2000?
2. What things I have to be carefull when migrating my repository to 6i.
3. In case if my migration is failed, can I still use Designer 6 on old Windows NT server.

All help and advice will appriated. Thanks in Advance.