It started so innocently.:suspiciou I ran chkdsk from My Computer w/ both "Fix Problems" & "Scan Bad Sectors" checked. It prompted to restart - I did - & it ran. Quite a while on c:\ that has ~ 4.75 GB data. It never showed any messages during or after running. Not found a log file, if it exists. Not content, I ran sfc /scannow. I put in the XP CD (w/ SP-2) when prompted. It ran a long time - probably > 1 hr. Again, no messages during or after it ran. Haven't found log file. Now, in addition to my orig problem of Explorer not displaying quite right, when I click on MS System Information (MSinfo32.exe), it launches the Help & Support Ctr (helpctr.exe & helpsvc.exe). Unless I've lost my mind (no comments), the MS System Information main screen looks nothing like XP Help & Support Ctr. I'm thinking sfc messed up? the msinfo32.exe file(s), or something else I can't imagine. I tried starting msinfo32.exe manually (two ver on the disk - one is a back up in Win\system32\dllcache). I also typed it into Run, and it still launches Help & Support. Inside msinfo32.exe, I see references to that name, so it doesn't look like the Help Center file was just renamed. XP boots normally & seems to be running OK. I'm not sure what's the best step to take now. I could restore, but that won't necessarily replace all damaged files, depending on how many / which ones. Suggestions?