I would like to compute how much time I spend traveling and how far I travel. Is there any program I can use?TravelMath.com will help you calculate travel distance and times.Select the "Quick trip calculator," then in the "Get" drop-down menu, select a calculation, such as driving distance, time difference, cost or any of the other options. Enter the city locations in the To/From fields so the calculator can compute cost, time, etc.Years ago, when I was an apprentice Fuller Brush man, I was given the universally shunned territory extending from Tucumcari to Blythe. If TravelMath.com had been available at the time, I would have learned that it required 11 hours to drive the 780 miles, and about $150 in fuel to close the deal on $46 worth of brushes.When I try to defragment my hard drive, I get an error stating that the drive can't be defragmented because there is corruption. Am I in big trouble?The good news is that there won't be any indictments issued. It means that your drive has dysfunctional sectors. Run the Check Disk utility (CHKDSK), which will scan your drive and repair bad sectors.To launch CHKDSK, go to Computer and right-click the drive in question, which will typically be your C: drive. Click Properties > Tools. Click to select the "Automatically Fix File System Errors" and "Scan for and Attempt Recovery of Bad Sectors" boxes, then click the Check Now button. (Wording may vary.)Running a scan of a large drive can take several hours or more. Don't use your computer. Just let it run.Mr. Modem publishes "Ask Mr. Modem!" each week, featuring PC tips, tricks and plain-English answers to your questions by e-mail. For more information, visit www.MrModem.com.