Install 8 and 8.5 in different folder on same OS

Dear ALL,I want to install notes client 8 and 8.5 on same machine but it is not allowing me to change install drive.

Please can anybody help me regarding this…

Thanks.

Subject: you have to fool it

First install 8. When finished, physically copy the whole Notes subdirectory to another folder. Then install 8.5. Now, you can run both from desktop icons pointing to the right folder (and at the same time!)