Update
Spent all morning at my friend's house. We decided to delete all the files which showed up in Disk Cleanup and things seemed to speed up a little, it took an absolute age! Strangely some files still remained namely 'compress old files' which consisted mainly of Java thingies which dated back to 2008. Is it safe to delete them manually? Also off topic, I have made Outlook Express her email client, but I am unable to import the address book from her Hotmail account, even though I have followed the instructions and created csv(?) file. Her lappy is a Dell Inspiron 2200 but has very little RAM? 34GB and she has used 11.6 does that make sense? She has entrusted me with her lappy overnight, I would like to give it back to her in much better working order, if that is poss.