Oh to be honest townsbg I didn't really notice the lack of SP1 I just checked with the system tools and Speccy and no mention of it.
Now I suspect since the install in 2008 maybe the updates have been switched off somehow as this machine has been used by all and sundry and to be honest thoroughly used without anyone doing any maintenance on it.
Perhaps it is worth downloading SP1 from my machine to a stick and try installing it that way.
In any case the machine is running like a lame snail and I have told the owner maybe a new HDD and 7 more RAM would be the go as this could take ages to fix and still no guarantee it will be of any useful purpose - what do you reckon? I mean for about $280 it's gonna have a decent sized HDD, OS and more RAM.