Hi Edel, Its kind of difficult to know what you should do here. If you wish to ban them from downloading stuff from the net then you have to take charge of downloading that necessary stuff they want for school projects. If you are going to allow them to download items for school work then you are still leaving your computer open up for mischief. I think that maybe you could stop items such as MP3's and other executable files from coming in but apart from that you will have to take charge of the job yourself for complete peace of mind. Paul. _____ I am using the free version of SPAMfighter for private users. It has removed 1781 spam emails to date. Paying users do not have this message in their emails. Try SPAMfighter <http://www.spamfighter.com/len> for free now! ******************************************************************** NOTICE: The information contained in this email and any attachments is confidential and may be privileged. If you are not the intended recipient you should not use, disclose, distribute or copy any of the content of it or of any attachment; you are requested to notify the sender immediately of your receipt of the email and then to delete it and any attachments from your system. NCBI endeavours to ensure that emails and any attachments generated by its staff are free from viruses or other contaminants. However, it cannot accept any responsibility for any such which are transmitted. We therefore recommend you scan all attachments. Please note that the statements and views expressed in this email and any attachments are those of the author and do not necessarily represent the views of NCBI ********************************************************************