Thanks very much all. I did a defrag a few weeks ago, so assume that won't help. I've also deleted all superflous progs i.e Those that came with MS Works and which I never use. If I've picked up a virus or something that takes up masses of space, I can't think how, since I only use the pooter for e.ms and a bit of light, non-pornographic surfing.
But from the replies, what I have to do is uninstall Works/Words, delete anything else (having backed it up first) and start again? Yes?