Quote - I forgot to mention in my last post that I did have problems connecting to parts of 3DC earlier this year - mainly the store.   That was apparently due to some silly thing that Vista set as default that older OS's didn't

The DEP (Data Execution Prwvention) was on by default - I turned it off and everything worked fine (including my Xero plugins - which is how I found out about it !!!)

Thanks - I just learned something new - had never heard of DEP before.  But -alas - that wasn't it either.