I use Outlook Express 5. Most ISPs now support IMAP and your provider should give you information on how to set up your system with this service. ScanDisk is now checking drive C for errors. It only ever happens when I try to go online. It's more likely to be a glitch on your system than the ISP causing a problem.
Bad sectors are physical errors on the disk.
My first step would be to run ScanDisk with the surface scan option. Make sure there are no other programs running in the background or screensavers set to kick in. The surface scan option will check to see if there are any bad sectors on the hard drive. A second step may be to reinstall Windows, which would replace any corrupted files. Q3 Internet Explorer is my default browser.