Thanks for all the suggestions, but no go I'm afraid. I found I am using irfanview 4.10 under wine in both my 2007 installations and still had the .exe files for that.
I completely removed wine using synaptic, removed all the other wine related material I could locate and rebooted. I then reinstalled wine from the repo, rebooted again, and tried to run iview410_setup.exe - nothing happened.
As far as I'm concerned KDE4 and the associated updates represent a set of broken packages. Ordinary users like me should never have been forced to get in what is a development situation. The KDE3.5 part of the repo should have been frozen, but still accessible to regular users, while the applications being updated for KDE4 were kept completely separated for the development team to experiment with. As it stands I can re-install 2009.2, but if I update, or add any new applications there is no guarantee that they haven't been updated for KDE4 and no longer work on KDE3.5.
I have a magazine to edit, and I cannot do this using a single installation of PCLinuxOS at present - luckily I can get at every thing I need by switching between 2007 and broken updated 2009.2s.
I am shortly expecting a delivery of a Dell mini 10v. If that doesn't work with any version of PLOS then I guess it will be the final straw.