I need to reinstall my disk defragmenter and my scan disk I believe and can't find out how to do this...can you help? My programs freeze when I try to use them. I can defrag in safe mode ok but the scan disk still freezes there. I have used the run:chkdsk and it seemed ok. Not that knowledgable on the comp. I am using windows 98 se and my tower is a intel pentium. I hope this is enough info to get some help. thanks in advance!