>Joao;
>
>Microsoft has assured us that VFP 5.0 and VFP 6.0 can run on the same machine without any ill effects. However, since hard disks are not very expensive I have a seperate hard disk and removable tray for each version. In fact I use a seperate hard disk for each client.
>
>Tom

I have them on my PC with no problem on one hard drive. I don't think that placing them to different hard drives makes it any better since the question my be only in common DLLs and OCXes which go into Windows and Windows/System directories.