Thank you for alerting me to the -ROAM command line which I was able to get to open a user account on my Windows 7 Pro machine. The version of the Pegasus Mail I have been using on XP is 4.41 from 2006. I have just read that Windows 7 was not released until 2009 - so it is probably no wonder that the program crashed shortly after giving this alert for any folder that I tried to open : "The folder ----- is damaged and cannot be opened. Please right-click the folder and use the Reindex folder option to repair it, then try opening it again."

 I think I should start a fresh thread asking about my best upgrade route from XP. My XP machine is still working and I need to move to Win 7/using BOTH very carefully. I have only been using a test account so far - but phrases like "re-index" really scare me with the possibility of data corruption. I don't want to lose 18 years' worth of correspondence.

I have been using Pegasus Mail V4.41 for many years on a thumb drive that I could shift between my Windows XP computers by using PConfig to make sure the assigned drive letter/program navigation matched on each PC. I stayed using V4.41 because it allowed for fast switching between accounts via the "Change user..." in the drop-down menu.

I now have a Windows 7 Pro computer with the 64 bit version of the operating system. Pegasus is a 32 bit program and the new computer won't let me run the PConfig file. I would like to know if there is any iteration of this software that will let me share the **same portable installation** with BOTH my 32 bit Windows XP machine and the 64 bit Windows Pro device.

The introduction of the -ROAM command line switch solved the problem of keeping up with drive letters.  I don't recall if it works with v4.41 though.  Check Help > Commandline options and see if it is listed.

From the current help file:

-ROAM  This option tells Pegasus Mail that it should ignore the configured drive letter when locating user mailboxes and mail files, and should instead use the drive letter of the drive from which WINPM-32.EXE was run. If Pegasus Mail and your mailbox directories are located on the same physical drive, you should always use this option. -ROAM greatly simplifies running the program on Peer-to-Peer and non-NetWare networks, because it allows the same copy of the program tobe run no matter what drive letter mappings exist on the particular workstation where it runs. This switch also allows you to install a complete, working copy of Pegasus Mail, complete with mailboxes, onto a memory stick, and to use that memory stick in any computer where it is subsequently plugged. You must not use this switch if Pegasus Mail and your mailbox directories cannot be accessed using the same drive letter. This switch is ignored and has no effect in either Novell NetWare operating mode.

As for running pconfig.exe on a 64-bit Win7 machine you need run it in a DOS emulator like DOSBOX.