Hi there,
got it all sorted, I had begun to make a bit of a mess of my system and was getting a bit out of my depth, so wiped the lot and started fresh with 10.2, I was very careful to ensure all the packages I wanted were installed.I'm lucky in that I always back up my important docs to DVD and a seperate drive regularly (old habits die hard thankfully) and I have a couple of fairly big hard discs to fill up with whatever I fancy. If I come accross anything else I may need, I'll cross that bridge when I come to it.
Bit of a brutal method though to be honest.
still it gave me a bit of an insight into what can go wrong if you muck about too much without finding out what you're doing first!
Thanks again for your help guys.