AARRGGHH!!!!!
on leaving the house last night I said to the babysitter 'fell free to use the internet'
today I have had to run adaware, spybot, hijack, system mechanic & delete 3 folders manually - it's taken over 30 mins to remove all the crap (including a 'helpfull' toolbar).
babysitter will NOT be invited to 'use the internet' next time.