help! - how to get postgres 7.3 back

[Richard Lyons <richard@the-place.net>]

Stupid me! I have cups problems and that foomatic bug.  Some apps print 
the wrong way round on the sheet, so I did an upgrade via aptitude to 
get the debugged foomatic and see if that would cure the printing. (it 
didn't).

But I forgot to check whether postgres would be upgraded and it was.  
Now I cannot access my database.

Running sid.  postgresql is now 7.4,  but won't open until I upgrade the 
database, which I can't without 7.3.  What do I do?

-- 
richard