NAV 5.0W1 Setup: be aware

Hi all Just tried to setup NAV 5.0W1 on my WinXP pro. I selected Install/Microsoft Dynamics NAV Demo version/Custom and changed default folder's name to new. After installation I found, that executable and related client files of some older Navision versions are deleted: 3.10A, 3.60, 3.70, 4.0. But installations in folders "Client" of versions 1.30, 2.60, 4.0 SP1, 4.0 SP2, 4.0 SP3 left unchanged. Regards J.