Paradox backdoor passwords

Some Paradox versions have universal backdoor passwords (also known as super / master / generic password), which come in handy in your situation:

for PARADOX 7.0 use this password: jIGGAe or cupcdvum

for PARADOX 5.0 use this password: same as for 7.0

for PARADOX 4.x (DOS) use this password: nx66ppx

You could also try a tool like this:

'Paradox Password Finder' (freeware, no source code)

http://www.rksolution.cz/Delphi/pxpassw.zip