OK.... I tried this from a different angle.

I installed Squeeze (Network Install ISO) selecting only Print Server,
SSH Server, Laptop and Standard System Utilities from the software
selection menu.

Then I added the Squeeze repositories as documented on the Trinity WIKI.

  # apt-get install desktop-base-trinity kde-trinity

Worked fine so I had Trinity 3.5.13.1 on Squeeze.

Then I changed the debian repositories in sources.list to be wheezy but
left the Trinity ones at squeeze.

  # apt-get update ; apt-get dist-upgrade

Did the job and I'm now running 3.5.13.1 on Wheezy.

There are some 'curiosities' (like the tdm being called kdm-trinity and
the config stuff lurking in /etc/trinity/kdm where I'm sure when I tried
the nightly builds it was /etc/trinity/tdm) but it is working.

Might be useful info for someone else.

-- 
 Regards,
     Russell
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| Russell Brown          | MAIL: russell@... PHONE: 01780 471800 |
| Lady Lodge Systems     | WWW Work: http://www.lls.com              |
| Peterborough, England  | WWW Play: http://www.ruffle.me.uk         |
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