First of all, thanks for the replies!
@Bill2
Unluckly, sorting by date is often not very helpful, because I use to cut and paste old files, so the file timestamps are not changed.
@pcs3657
Your link seems to regard something else.
Again, thanks for trying to help.
Er... first "brutal" idea... maybe is somehow possibile to port XP's Explorer to Windows 7? Eheheh, this would fix...