NIS 2009 has been downloaded to windows xp sp1 in error, did not notice not compatible and have had numerous problems since. Have tried to remove it (so can then download xp sp 3) by using the add/remove programs in the control panel and it appears to have gone but still getting problems with the computer. for example slow response, hanging for ages, disconnecting from internet. Is there anything else I can do? Many thanks for any ideas!