|You can clear out your cookies, browsing history and temporary internet files and delete any other files containing that information. I don't know why you'd have that information on your computer anyway. When logging on to those sites don't you have to enter that information each time?|
Plus you'll still be running your AV won't you?
And XP will be just as secure after April 8 as it is now. MS isn't 'taking away' anything. They're just not providing any new updates, although some updates may be available in China. See Riider's # 2 here:
but I don't know if I'd feel safe with security updates coming from China.