I can't. This is a PC that is too slow for SP3 now. I tried it when SP3 was released and it just made it slower. I had to roll back. I use defensive measures

I can't. This is a PC that is too slow for SP3 now. I tried it when SP3 was released and it just made it slower. I had to roll back. I use defensive measures and have been able to ward off bots and virii so far (not that they didn't get through a few years ago...).