I found this in a few different places around the 'net - hopefully it's helpful:
Check for Disk Errors in Windows XP
The ScanDisk utility is not available in Windows XP. However, you can use the Error-Checking tool in Windows XP to check the integrity of your hard disk.
- Double-click My Computer, and then right-click the local disk that you want to check.
- Click Properties, and then click Tools.
- Under Error-checking, click Check Now.
- Under Check disk options, select the Scan for and attempt recovery of bad sectors check box.
- Click Start.